[{"data":1,"prerenderedAt":4120},["ShallowReactive",2],{"\u002Fblog\u002Finspect-email-links-tracking-pixels":3,"\u002Fblog\u002Finspect-email-links-tracking-pixels-related-library":273,"\u002Fblog\u002Finspect-email-links-tracking-pixels-surround":4117},{"id":4,"title":5,"audience":6,"authors":9,"badge":15,"body":17,"category":246,"contentQuality":247,"date":251,"description":252,"extension":253,"featured":254,"image":255,"indexable":257,"locale":258,"meta":259,"navigation":257,"path":260,"relatedPosts":261,"relatedTools":264,"reviewedBy":266,"seo":267,"stem":268,"topics":269,"updated":271,"userTask":250,"verifiedAt":271,"__hash__":272},"posts\u002F3.blog\u002F6.inspect-email-links-tracking-pixels.md","How to Inspect Email Links and Tracking Pixels Without Opening Them",[7,8],"general-reader","security-reviewer",[10],{"name":11,"to":12,"avatar":13},"Once Email Engineering","\u002Fabout",{"src":14},"\u002Fimages\u002Fauthors\u002Fdefault-cartoon-author-v2.webp",{"label":16},"Safe link inspection",{"type":18,"value":19,"toc":233},"minimark",[20,24,33,36,41,44,54,58,61,64,84,87,91,103,106,110,113,135,138,142,160,163,167,170,179,182,186,189,192,196,199,220,223,227,230],[21,22,23],"p",{},"An email can contain links and remote images that contact another server when opened or rendered. A visible button may point to a different domain, a URL may wrap another destination in a redirect parameter, and a tiny image may act as a tracking pixel.",[21,25,26,27,32],{},"The safest first inspection does not open the link or render the message HTML. Once Email's ",[28,29,31],"a",{"href":30},"\u002Ftools\u002Femail-link-checker","email link and tracker checker"," reads pasted HTML locally in the browser and reports structural clues. It does not visit discovered URLs, request images, run scripts, follow redirects or upload the input.",[21,34,35],{},"Once Email itself is receive-only: it does not send, reply to or forward messages. The checker is a separate browser-local utility and does not change that product boundary.",[37,38,40],"h2",{"id":39},"start-with-context-not-the-button","Start with context, not the button",[21,42,43],{},"Before examining HTML, ask whether you expected the message. A real-looking logo, sender name or urgent subject is not proof of origin. If the message claims to concern a bank, workplace or account, open the organisation's known official site or app independently instead of following the email link.",[21,45,46,47,53],{},"The US Federal Trade Commission advises users not to click links or download attachments in unexpected messages and to contact the organisation through a website or number already known to be genuine. See the FTC's ",[28,48,52],{"href":49,"rel":50},"https:\u002F\u002Fconsumer.ftc.gov\u002Fconsumer-alerts\u002F2025\u002F04\u002Fprotect-yourself-phishing-scams",[51],"nofollow","phishing protection guidance",".",[37,55,57],{"id":56},"inspect-html-without-rendering-it","Inspect HTML without rendering it",[21,59,60],{},"Use source HTML only when you can obtain it safely and are authorised to inspect it. Do not paste passwords, live session cookies, private correspondence or other people's confidential information.",[21,62,63],{},"In the checker:",[65,66,67,71,78,81],"ol",{},[68,69,70],"li",{},"Paste the email HTML source, up to the documented 128 KB limit.",[68,72,73,74,53],{},"Select ",[75,76,77],"strong",{},"Inspect HTML",[68,79,80],{},"Review discovered links, remote resources and active-content clues.",[68,82,83],{},"Clear the input when finished.",[21,85,86],{},"The tool parses tag and attribute text without creating a live email document. This distinction matters: rendering untrusted HTML could request remote content or activate browser behaviour that a text-only inspection avoids.",[37,88,90],{"id":89},"clue-1-dangerous-or-executable-schemes","Clue 1: dangerous or executable schemes",[21,92,93,94,98,99,102],{},"Normal web destinations usually use ",[95,96,97],"code",{},"https:",". Schemes such as ",[95,100,101],{},"javascript:"," or other executable forms are unsafe in untrusted content. The checker flags dangerous scheme patterns rather than attempting to run them.",[21,104,105],{},"A flagged scheme is a reason to stop. A clean scheme is only the beginning of review; an HTTPS site can still be deceptive or compromised.",[37,107,109],{"id":108},"clue-2-visible-text-and-destination-mismatch","Clue 2: visible text and destination mismatch",[21,111,112],{},"A message may display a familiar domain while the underlying link points elsewhere. The checker compares visible link text with the parsed destination and highlights likely mismatches for manual review.",[21,114,115,116,119,120,123,124,119,127,130,131,134],{},"Read hostnames from right to left around the registrable domain. ",[95,117,118],{},"accounts.example.com"," belongs under ",[95,121,122],{},"example.com",", while ",[95,125,126],{},"example.com.attacker.test",[95,128,129],{},"attacker.test",". Long subdomains, look-alike characters and Punycode hostnames beginning with ",[95,132,133],{},"xn--"," deserve deliberate verification.",[21,136,137],{},"Do not assume every internationalised domain is malicious; Punycode is a technical representation used by legitimate sites too. It is a clue that the exact hostname needs checking, not a verdict.",[37,139,141],{"id":140},"clue-3-nested-redirect-destinations","Clue 3: nested redirect destinations",[21,143,144,145,148,149,148,152,155,156,159],{},"Marketing and security systems often wrap a destination in parameters such as ",[95,146,147],{},"url",", ",[95,150,151],{},"target",[95,153,154],{},"redirect"," or ",[95,157,158],{},"continue",". Attackers can use similar structures to hide where a click eventually goes.",[21,161,162],{},"The checker identifies common nested-destination parameters but does not follow them. That is intentional: following a link would contact external servers and could expose network data or reach harmful content. Compare any embedded destination with the service you expected, then use the known official site instead of testing a suspicious chain.",[37,164,166],{"id":165},"clue-4-remote-images-and-tracking-pixels","Clue 4: remote images and tracking pixels",[21,168,169],{},"An HTML email can reference an image hosted on a remote server. Loading it may reveal that the message was viewed and can expose request data such as time and network information. Very small or hidden remote images are common tracking-pixel clues.",[21,171,172,173,178],{},"Apple's current ",[28,174,177],{"href":175,"rel":176},"https:\u002F\u002Fsupport.apple.com\u002Fen-gb\u002Fguide\u002Fmail\u002Fmlhlp1205\u002Fmac",[51],"Mail privacy documentation"," explains that remote email content can reveal viewing activity, forwarding, IP address and related data, and describes how its own protection changes remote loading. Different clients and settings behave differently, so do not assume that protection is universal.",[21,180,181],{},"The Once Email checker lists remote resources without loading them. It flags tiny or hidden image patterns, but dimensions alone cannot prove intent. A large remote image can track, while a small image can be legitimate.",[37,183,185],{"id":184},"clue-5-active-content-and-automatic-refresh","Clue 5: active content and automatic refresh",[21,187,188],{},"Scripts, embedded frames, objects and meta refresh instructions do not belong in a conservative email review path. The checker reports these patterns as active-content clues and never executes them.",[21,190,191],{},"Email clients may already block some active content, but client filtering is not a reason to trust the message. Treat unexpected active elements or automatic redirection as escalation signals.",[37,193,195],{"id":194},"what-a-clean-result-does-not-prove","What a clean result does not prove",[21,197,198],{},"The checker is deliberately limited. It does not perform:",[200,201,202,205,208,211,214,217],"ul",{},[68,203,204],{},"DNS, WHOIS or certificate validation;",[68,206,207],{},"sender or domain reputation checks;",[68,209,210],{},"live SPF, DKIM or DMARC verification;",[68,212,213],{},"redirect following or final-destination discovery;",[68,215,216],{},"malware, attachment or page-content scanning;",[68,218,219],{},"a determination that a sender or request is legitimate.",[21,221,222],{},"HTML can also be incomplete or deliberately constructed to evade simple pattern checks. A result with no findings means only that the implemented clues were not found in the supplied text.",[37,224,226],{"id":225},"a-safe-decision-sequence","A safe decision sequence",[21,228,229],{},"Confirm that you initiated the activity, inspect without rendering, compare exact domains, avoid external requests, and independently open the known official service when action is necessary. Report suspected abuse without forwarding live secrets or opening attachments.",[21,231,232],{},"The tool helps turn opaque email HTML into a reviewable list. It reduces accidental loading and clicking; it does not replace judgment, endpoint protection or an organisation's security process.",{"title":234,"searchDepth":235,"depth":235,"links":236},"",2,[237,238,239,240,241,242,243,244,245],{"id":39,"depth":235,"text":40},{"id":56,"depth":235,"text":57},{"id":89,"depth":235,"text":90},{"id":108,"depth":235,"text":109},{"id":140,"depth":235,"text":141},{"id":165,"depth":235,"text":166},{"id":184,"depth":235,"text":185},{"id":194,"depth":235,"text":195},{"id":225,"depth":235,"text":226},"content-safety",{"originalAnalysis":248,"trendContext":249,"practicalValue":250},"The inspection method ranks structural clues—scheme, visible domain, nested destination and remote resource—without visiting a discovered URL or claiming a safety verdict.","Redirect wrappers and tracking protections continue to evolve, while the core risk remains stable: rendering remote content or following a link creates a new network interaction.","Readers gain a browser-local workflow for extracting useful clues from email HTML before deciding whether any destination deserves independent verification.","2025-05-09","Review email HTML locally for dangerous schemes, nested redirects, misleading domains, remote images and tracking-pixel clues without rendering the message.","md",false,{"src":256},"\u002Fimages\u002Fblog\u002Fregister-cover.webp",true,"en",{},"\u002Fblog\u002Finspect-email-links-tracking-pixels",[262,263],"attachment-safety-checklist","email-verification-code-safety",[265],"email-link-checker","Once Email technical review",{"title":5,"description":252},"3.blog\u002F6.inspect-email-links-tracking-pixels",[270],"links","2026-08-04","FLjhutbRtkQah-q1YGyNKAfFazUgCZR-_OBLSaR0gzQ",[274,389,642,890,1189,1339,1609,1782,2022,2343,2727,2938,3095,3284,3472,3664,3812,4000],{"id":275,"title":276,"audience":277,"authors":278,"badge":281,"body":283,"category":367,"contentQuality":368,"date":372,"description":373,"extension":253,"featured":254,"image":374,"indexable":257,"locale":258,"meta":376,"navigation":257,"path":377,"relatedPosts":378,"relatedTools":381,"reviewedBy":382,"seo":383,"stem":384,"topics":385,"updated":387,"userTask":371,"verifiedAt":387,"__hash__":388},"posts\u002F3.blog\u002F1.helloworld.md","Why Once Email Is Receive-Only by Design",[7],[279],{"name":11,"to":12,"avatar":280},{"src":14},{"label":282},"Product principles",{"type":18,"value":284,"toc":360},[285,288,291,295,298,312,319,323,326,329,333,336,339,343,346,349,353],[21,286,287],{},"Once Email is a temporary, receive-only mailbox. It creates an address that can receive short-lived messages in a browser inbox. It does not send, reply to or forward email.",[21,289,290],{},"That narrow scope is deliberate. A temporary inbox can keep routine software tests and low-risk registrations separate from a long-term personal address, but it is not a replacement for a permanent email account.",[37,292,294],{"id":293},"what-a-temporary-inbox-is-useful-for","What a temporary inbox is useful for",[21,296,297],{},"The service is designed for situations where a message is useful only briefly:",[200,299,300,303,306,309],{},[68,301,302],{},"receiving a verification message while testing software you are authorised to test;",[68,304,305],{},"separating a low-risk newsletter trial from a primary inbox;",[68,307,308],{},"checking how an application formats transactional email;",[68,310,311],{},"reviewing a message header or suspicious link with the browser-local tools on this site.",[21,313,314,315,53],{},"Using a temporary address does not make a person anonymous. The website and its infrastructure still process ordinary technical information needed to serve requests and protect the service. The current data practices are described in the ",[28,316,318],{"href":317},"\u002Fprivacy","Privacy Policy",[37,320,322],{"id":321},"when-not-to-use-it","When not to use it",[21,324,325],{},"Do not use a temporary mailbox for banking, healthcare, government services, account recovery, employment records or anything that must remain available. A temporary address may expire, a domain may be rejected by another service, and deleted messages cannot be restored.",[21,327,328],{},"Always follow the rules of the website receiving the address. Once Email is not intended to bypass account limits, promotions, identity checks, bans or access controls.",[37,330,332],{"id":331},"why-the-service-does-not-send-email","Why the service does not send email",[21,334,335],{},"Outbound email would introduce a different abuse and security profile, including spam prevention, sender authentication, rate limiting and account controls. Once Email instead focuses on making the receiving experience understandable and keeping the product boundary easy to verify.",[21,337,338],{},"The interface therefore has no compose, reply, forwarding or SMTP feature. Any page or third party claiming that Once Email can send messages is not describing this service accurately.",[37,340,342],{"id":341},"safety-and-privacy-boundaries","Safety and privacy boundaries",[21,344,345],{},"Received HTML is displayed through a protected preview that blocks scripts, forms and remote images. Links open only after the user chooses them. The email header analyser, link checker and password generator process their inputs in the browser and do not upload tool input.",[21,347,348],{},"These controls reduce routine risk; they cannot prove that a sender, message, link or attachment is safe. Important files should still be scanned with current security software, and suspicious requests should be verified through a trusted channel.",[37,350,352],{"id":351},"how-this-article-is-maintained","How this article is maintained",[21,354,355,356,53],{},"This page was rewritten and technically reviewed on 2 August 2026 against the production interface and current project behaviour. Material changes are recorded through the public updated date. Our full publication and correction rules are in the ",[28,357,359],{"href":358},"\u002Fblog\u002Feditorial-policy","Editorial and review policy",{"title":234,"searchDepth":235,"depth":235,"links":361},[362,363,364,365,366],{"id":293,"depth":235,"text":294},{"id":321,"depth":235,"text":322},{"id":331,"depth":235,"text":332},{"id":341,"depth":235,"text":342},{"id":351,"depth":235,"text":352},"service-boundaries",{"originalAnalysis":369,"trendContext":370,"practicalValue":371},"We map common short-lived inbox tasks to the receive-only product boundary, then test each use against recovery, continuity and abuse consequences.","Verification and passwordless sign-in are increasing the number of transactional messages, while durable recovery still requires an address the user controls long term.","Readers can decide whether a temporary inbox fits the task and identify when a permanent address is the safer requirement before creating an account.","2025-04-15","A factual introduction to Once Email, the problems a temporary inbox can solve, the cases where it should not be used, and the safety boundaries behind the service.",{"src":375},"\u002Fimages\u002Fblog\u002Fhelloworld-cover.webp",{},"\u002Fblog\u002Fhelloworld",[379,380],"editorial-policy","why-sites-reject-disposable-email",[],"Once Email editorial review",{"title":276,"description":373},"3.blog\u002F1.helloworld",[386],"privacy","2026-08-02","_iObhifVT0BzrULjizFRIAlTin3z7BzRFKc3UqsDvtE",{"id":390,"title":391,"audience":392,"authors":394,"badge":397,"body":399,"category":623,"contentQuality":624,"date":387,"description":628,"extension":253,"featured":254,"image":629,"indexable":257,"locale":258,"meta":631,"navigation":257,"path":632,"relatedPosts":633,"relatedTools":636,"reviewedBy":266,"seo":637,"stem":638,"topics":639,"updated":387,"userTask":627,"verifiedAt":387,"__hash__":641},"posts\u002F3.blog\u002F10.email-testing-checklist.md","Email Testing Checklist for Developers: From Request to Expiry",[393],"developer",[395],{"name":11,"to":12,"avatar":396},{"src":14},{"label":398},"Developer testing",{"type":18,"value":400,"toc":613},[401,404,407,411,421,424,444,453,457,460,469,472,476,479,482,503,506,510,513,516,536,543,547,550,553,573,576,580,583,591,595,598,606,610],[21,402,403],{},"Email testing is more than confirming that a message appeared. A reliable test follows the event from the application request through delivery, rendering, user action, expiry and retry behaviour. It also checks that the flow fails safely.",[21,405,406],{},"Use this checklist only on systems and accounts you own or are authorised to test. Do not use temporary inboxes to create bulk accounts, evade another website's limits or test a third-party reset flow without permission. Once Email receives messages only; it does not send replies and cannot prove what happened inside the sender's application.",[37,408,410],{"id":409},"_1-define-one-test-case-before-requesting-mail","1. Define one test case before requesting mail",[21,412,413,414,155,417,420],{},"Record the environment, build, browser, feature and expected result before pressing the button. Give each run a neutral identifier such as ",[95,415,416],{},"signup-valid-address",[95,418,419],{},"reset-expired-link","; do not put a password, token or personal address in the test name.",[21,422,423],{},"Prepare cases for the paths the product actually supports:",[200,425,426,429,432,435,438,441],{},[68,427,428],{},"a valid sign-up or address-verification request;",[68,430,431],{},"an address with an obvious input error;",[68,433,434],{},"a repeated request while the first message is still valid;",[68,436,437],{},"an expired or already-used code;",[68,439,440],{},"a password-reset request for both an existing and a non-existing account;",[68,442,443],{},"cancellation, return navigation and a second browser session where relevant.",[21,445,446,447,452],{},"The ",[28,448,451],{"href":449,"rel":450},"https:\u002F\u002Fowasp.org\u002Fwww-project-web-security-testing-guide\u002Flatest\u002F4-Web_Application_Security_Testing\u002F04-Authentication_Testing\u002F09-Testing_for_Weak_Password_Change_or_Reset_Functionalities",[51],"OWASP Web Security Testing Guide"," treats reset as an alternative route into an account and recommends reviewing every supported interface. Your test plan should therefore cover the web interface, mobile application and API separately when their behaviour can differ.",[37,454,456],{"id":455},"_2-check-the-request-response-without-enumerating-users","2. Check the request response without enumerating users",[21,458,459],{},"Submit one authorised request and note the visible response, status and time. For password recovery, existing and non-existing accounts should not disclose account membership through clearly different messages or response timing.",[21,461,462,463,468],{},"Do not generate a large sample to test this. Coordinate load, abuse and rate-limit testing with the system owner, use a dedicated environment and stop at the approved boundary. OWASP's ",[28,464,467],{"href":465,"rel":466},"https:\u002F\u002Fcheatsheetseries.owasp.org\u002Fcheatsheets\u002FForgot_Password_Cheat_Sheet.html",[51],"Forgot Password Cheat Sheet"," recommends consistent responses and protection against excessive automated submissions because a reset endpoint can otherwise expose account existence or flood an inbox.",[21,470,471],{},"Verify that a second click does not silently create an unsafe collection of simultaneously valid secrets. The intended policy might invalidate the first code, reuse a pending request or allow a carefully limited number; the product team must define which result is correct.",[37,473,475],{"id":474},"_3-observe-delivery-as-a-timed-state-not-an-instant-assertion","3. Observe delivery as a timed state, not an instant assertion",[21,477,478],{},"Start a timer when the application accepts the request. Record when the message becomes visible, but use a reasonable observation window instead of treating a few seconds of delay as failure. Mail passes through queues and filters, so arrival time is a distribution rather than a fixed constant.",[21,480,481],{},"When using Once Email for an authorised low-risk test:",[65,483,484,487,490,493,500],{},[68,485,486],{},"Create or select a receive-only address with enough remaining lifetime.",[68,488,489],{},"Copy the address exactly into the application under test.",[68,491,492],{},"Request one message and keep the inbox open.",[68,494,495,496,53],{},"If it does not appear, refresh deliberately and follow the ",[28,497,499],{"href":498},"\u002Fblog\u002Fanxiety","verification email troubleshooting checklist",[68,501,502],{},"Record the request and observed-arrival times in UTC, plus the test environment.",[21,504,505],{},"Do not claim that a missing message proves the sender never sent it. Application logs, provider events and message headers are separate evidence sources. Use a correlation value created by the test system when possible, but do not expose it publicly if it grants access or identifies a user.",[37,507,509],{"id":508},"_4-validate-the-message-as-content-and-data","4. Validate the message as content and data",[21,511,512],{},"Compare the received subject, sender domain and visible purpose with the approved template. Check the plain-text and HTML alternatives when the application generates both. Review spacing, wrapping, colour contrast and the meaningful order of content on desktop and a narrow mobile viewport.",[21,514,515],{},"Then check the variable data:",[200,517,518,521,524,527,530,533],{},[68,519,520],{},"the intended test address appears where required and nowhere unexpected;",[68,522,523],{},"the environment name is clear enough to prevent staging mail being mistaken for production;",[68,525,526],{},"dates and expiry statements use an unambiguous time zone;",[68,528,529],{},"the code or action is associated with the correct test case;",[68,531,532],{},"links use HTTPS and the expected host;",[68,534,535],{},"no internal stack trace, API key, password or unrelated customer data appears.",[21,537,538,539,542],{},"Do not open a suspicious link merely to discover its destination. Copy message HTML into the browser-local ",[28,540,541],{"href":30},"email link checker"," to list URLs and remote resources without rendering the email, then compare the destination host with the test specification.",[37,544,546],{"id":545},"_5-exercise-success-reuse-and-expiry","5. Exercise success, reuse and expiry",[21,548,549],{},"For a code or link, test the approved happy path once. Confirm that it performs only the intended action, reaches the correct environment and does not expose the secret in an unnecessary page element or analytics event.",[21,551,552],{},"Next, check the security transitions:",[200,554,555,558,561,564,567,570],{},[68,556,557],{},"a single-use secret stops working after success;",[68,559,560],{},"an expired secret is rejected without completing the action;",[68,562,563],{},"a malformed value fails safely;",[68,565,566],{},"a replacement request follows the documented invalidation rule;",[68,568,569],{},"opening the action in a different browser does not bypass required context;",[68,571,572],{},"a password reset does not automatically weaken multi-factor authentication or leave unwanted sessions active.",[21,574,575],{},"OWASP recommends random, sufficiently long, securely stored, single-use and expiring reset secrets. It also recommends HTTPS reset URLs and protections against guessing. Your test should verify product behaviour, not attempt uncontrolled brute force.",[37,577,579],{"id":578},"_6-test-failure-messages-and-recovery","6. Test failure messages and recovery",[21,581,582],{},"A user needs a useful next step when delivery is delayed, a code expires or a link has already been used. Confirm that errors do not reveal account existence, secret fragments or internal infrastructure. The interface should allow a legitimate retry without encouraging repeated rapid requests.",[21,584,585,586,590],{},"Also test what happens when the temporary inbox expires before the account flow is complete. A disposable address is unsuitable when the account needs long-term recovery, receipts or security notices. The ",[28,587,589],{"href":588},"\u002Fblog\u002Fdifference","temporary versus permanent email guide"," explains when a permanent, controlled address is the safer test assumption.",[37,592,594],{"id":593},"_7-record-a-minimal-reproducible-result","7. Record a minimal, reproducible result",[21,596,597],{},"A useful test result includes the case, environment, build, UTC timeline, expected result, actual result and one carefully redacted evidence item. State whether the problem is in request creation, message delivery, content, action, expiry or recovery. Avoid a vague result such as “email broken.”",[21,599,600,601,605],{},"If the evidence contains an address, verification code, reset link, Message-ID, cookie or internal hostname, do not upload it unchanged. Follow the ",[28,602,604],{"href":603},"\u002Fblog\u002Fsafe-email-test-evidence","email test evidence redaction guide"," before attaching it to an issue.",[37,607,609],{"id":608},"release-decision-checklist","Release decision checklist",[21,611,612],{},"Before marking the flow ready, confirm that authorised success cases pass, negative cases fail safely, retry and expiry rules match the specification, content works at narrow width, no secret enters logs or analytics, and evidence can reproduce failures without exposing a usable credential. One successful arrival is useful evidence, but it is not a complete email-flow test.",{"title":234,"searchDepth":235,"depth":235,"links":614},[615,616,617,618,619,620,621,622],{"id":409,"depth":235,"text":410},{"id":455,"depth":235,"text":456},{"id":474,"depth":235,"text":475},{"id":508,"depth":235,"text":509},{"id":545,"depth":235,"text":546},{"id":578,"depth":235,"text":579},{"id":593,"depth":235,"text":594},{"id":608,"depth":235,"text":609},"testing-engineering",{"originalAnalysis":625,"trendContext":626,"practicalValue":627},"The checklist follows one event through request, queue, delivery, rendering, action, expiry and retry so a passing inbox check cannot hide a broken lifecycle.","Passwordless login and multi-client transactional flows increase the number of boundary cases, while authorised testing and safe failure behaviour remain non-negotiable.","Developers can turn the sections into reproducible test cases with expected results, timestamps and failure evidence instead of relying on an informal visual check.","A practical, authorised checklist for testing sign-up, verification and password-reset email flows without masking delivery defects or weakening security controls.",{"src":630},"\u002Fimages\u002Fblog\u002Femail-testing-checklist-cover.webp",{},"\u002Fblog\u002Femail-testing-checklist",[634,635],"safe-email-test-evidence","temporary-email-api-testing-guide",[],{"title":391,"description":628},"3.blog\u002F10.email-testing-checklist",[640],"testing","qov_JqWeIV9CHIIWA1sF49qJcLTGKe0SiCO3A35qPLI",{"id":643,"title":644,"audience":645,"authors":646,"badge":649,"body":651,"category":623,"contentQuality":873,"date":387,"description":877,"extension":253,"featured":254,"image":878,"indexable":257,"locale":258,"meta":880,"navigation":257,"path":603,"relatedPosts":881,"relatedTools":883,"reviewedBy":885,"seo":886,"stem":887,"topics":888,"updated":387,"userTask":876,"verifiedAt":387,"__hash__":889},"posts\u002F3.blog\u002F11.safe-email-test-evidence.md","How to Save Email Test Evidence Without Exposing Secrets",[393,8],[647],{"name":11,"to":12,"avatar":648},{"src":14},{"label":650},"Evidence safety",{"type":18,"value":652,"toc":863},[653,656,665,669,672,675,678,682,685,717,728,731,735,738,745,753,757,760,763,766,775,778,782,785,800,803,807,810,813,817,820,823,846,850,853,856],[21,654,655],{},"A screenshot can prove that an email rendered incorrectly, but it can also publish a working reset link. A copied header can explain a delivery path while exposing an address, Message-ID, internal host or test correlation value. Good evidence preserves the fact needed to reproduce a defect and removes everything that does not support that fact.",[21,657,658,659,664],{},"Treat verification codes, magic links and password-reset URLs as credentials while they are valid. Redaction is not a substitute for expiry or revocation: if a real secret has already been shared, invalidate or rotate it first. GitHub's official guidance on ",[28,660,663],{"href":661,"rel":662},"https:\u002F\u002Fdocs.github.com\u002Fen\u002Fauthentication\u002Fkeeping-your-account-and-data-secure\u002Fremoving-sensitive-data-from-a-repository",[51],"removing sensitive data from a repository"," likewise recommends revoking or rotating an exposed password, token or credential before attempting repository cleanup.",[37,666,668],{"id":667},"start-with-the-question-the-evidence-must-answer","Start with the question the evidence must answer",[21,670,671],{},"Write one sentence before collecting anything: “This evidence should show that…” Examples include “the mobile subject line overlaps the timestamp,” “the reset message arrived after its stated validity period,” or “the link points to the staging host.”",[21,673,674],{},"That sentence limits collection. A layout defect may need a cropped screenshot and viewport width, not the raw message. A delayed-delivery defect may need UTC timestamps and an anonymised correlation value, not the message body. A header-parsing defect may need a small synthetic header sample, not a customer's original message.",[21,676,677],{},"Prefer evidence created with dedicated test accounts and fictional data. Do not use a real customer's inbox merely because it already demonstrates the problem.",[37,679,681],{"id":680},"know-what-to-remove","Know what to remove",[21,683,684],{},"Review both visible and hidden data. Common sensitive elements include:",[200,686,687,690,693,696,699,705,708,711,714],{},[68,688,689],{},"full sender and recipient addresses;",[68,691,692],{},"verification codes, one-time passwords and magic links;",[68,694,695],{},"every reset URL, including its query string and fragment;",[68,697,698],{},"passwords, API keys, cookies, authorisation fields and session identifiers;",[68,700,701,704],{},[95,702,703],{},"Message-ID",", provider queue IDs and application correlation IDs;",[68,706,707],{},"internal hostnames, private IP addresses and non-public environment URLs;",[68,709,710],{},"names, phone numbers, locations, order details and unrelated message content;",[68,712,713],{},"browser tabs, bookmarks, notifications and desktop filenames captured around a screenshot;",[68,715,716],{},"image metadata when the collection tool preserves it.",[21,718,719,724,725,727],{},[28,720,723],{"href":721,"rel":722},"https:\u002F\u002Fwww.rfc-editor.org\u002Finfo\u002Frfc5322\u002F",[51],"RFC 5322"," defines ",[95,726,703],{}," as a unique machine-readable identifier for a particular version of a message. It is valuable for controlled log correlation, but uniqueness is also why a public report usually needs a stable placeholder rather than the original value.",[21,729,730],{},"Do not forget URLs behind buttons. A screenshot may hide the destination, while copied HTML or a hover tooltip reveals the full token. Conversely, painting over visible text in an image does not remove a secret from the underlying HTML, PDF layer, issue description or attachment filename.",[37,732,734],{"id":733},"choose-the-smallest-safe-evidence-format","Choose the smallest safe evidence format",[21,736,737],{},"Use a cropped screenshot for visual position, wrapping, contrast or responsive layout. Use a short text excerpt for exact characters or parsing. Use a structured timeline for delivery delay. Use a synthetic message for a repeatable parser test.",[21,739,740,741,744],{},"Avoid attaching a full mailbox export when three lines prove the defect. Do not upload raw ",[95,742,743],{},".eml"," files to a broadly visible issue tracker by default: they can contain the full body, all header fields, remote-resource URLs and attachments.",[21,746,747,748,752],{},"Once Email displays received messages but does not provide an evidence-export or redaction guarantee. Its ",[28,749,751],{"href":750},"\u002Ftools\u002Femail-header-analyzer","email header analyser"," processes pasted header text locally in the browser and can help identify fields, but you remain responsible for deciding what can be shared.",[37,754,756],{"id":755},"redact-screenshots-safely","Redact screenshots safely",[21,758,759],{},"Make a copy and keep any unredacted original only in an approved, access-controlled location. Crop to the relevant component first. Then replace sensitive regions with opaque blocks; do not rely on blur, pixelation, translucent highlighting or placing a movable shape over editable content.",[21,761,762],{},"Export the redacted result as a flattened image. Reopen that exported file, zoom in and verify that the secret cannot be recovered by hiding a layer, copying text or increasing contrast. Check the image edges and surrounding browser chrome for addresses, tabs and notifications.",[21,764,765],{},"Use meaningful placeholders when context matters:",[767,768,773],"pre",{"className":769,"code":771,"language":772,"meta":234},[770],"language-text","[TEST_RECIPIENT]\n[VERIFICATION_CODE_REMOVED]\nhttps:\u002F\u002Fstaging.example\u002Freset?[TOKEN_REMOVED]\nMessage-ID: \u003C[MESSAGE_ID_REMOVED]>\n","text",[95,774,771],{"__ignoreMap":234},[21,776,777],{},"Keep the same placeholder for repeated occurrences only when showing that two values match is necessary. Otherwise, avoid creating a stable pseudonym that lets readers correlate unrelated reports.",[37,779,781],{"id":780},"redact-headers-and-links-without-destroying-the-bug","Redact headers and links without destroying the bug",[21,783,784],{},"Copy the minimum relevant fields into a new text file. Replace sensitive values; do not edit the only original evidence. Preserve field names, folding and delimiters if the defect concerns parsing.",[21,786,787,788,791,792,795,796,799],{},"For a delivery-order issue, an anonymised sample might retain ",[95,789,790],{},"Received"," timestamps while replacing hosts, addresses and queue IDs. For an authentication display issue, preserve result keywords such as ",[95,793,794],{},"spf=pass"," while replacing domains with reserved examples like ",[95,797,798],{},"sender.example",". Explain every substitution in the report.",[21,801,802],{},"If a reset URL demonstrates the wrong hostname, keep only the scheme and sanitised host, then replace the complete path, query and fragment unless those components are the defect. Never preserve a partial real token: secret formats can contain account identifiers or remain usable after only a few characters are hidden.",[37,804,806],{"id":805},"separate-the-public-report-from-restricted-evidence","Separate the public report from restricted evidence",[21,808,809],{},"The main issue should contain the reproducible steps, expected result, actual result, environment, build and sanitised evidence. If an authorised security or privacy reviewer genuinely needs the original, place it in the organisation's approved restricted channel with an owner and deletion date. Do not casually attach it to chat.",[21,811,812],{},"Record who can access the restricted copy and why. Delete it when the investigation ends or the retention period expires. A long-lived archive of temporary verification messages creates risk without improving a closed defect.",[37,814,816],{"id":815},"review-before-upload","Review before upload",[21,818,819],{},"Use a two-pass review. First, the reporter checks every visible value, link target, filename and metadata field. Second, another authorised person checks the exported artifact as a recipient would see it. Open the exact file that will be uploaded, not the editable source.",[21,821,822],{},"Confirm that:",[65,824,825,828,831,834,837,840,843],{},[68,826,827],{},"no valid code, link, cookie or credential remains;",[68,829,830],{},"addresses and personal data are removed unless strictly necessary and approved;",[68,832,833],{},"identifiers are placeholders or stored only in a restricted channel;",[68,835,836],{},"the evidence still proves the stated actual result;",[68,838,839],{},"reproduction steps use test data and an authorised environment;",[68,841,842],{},"the issue's visibility matches the remaining sensitivity;",[68,844,845],{},"a retention or deletion decision exists for restricted originals.",[37,847,849],{"id":848},"if-a-secret-was-already-published","If a secret was already published",[21,851,852],{},"Stop sharing the link and contact the system owner. Expire or rotate the credential, invalidate affected sessions where appropriate, restrict the report, and follow the repository or issue system's cleanup procedure. Deleting the latest screenshot or commit may not remove cached copies, notifications, forks or history.",[21,854,855],{},"After containment, replace the artifact with a verified redacted version and document the exposure through the organisation's incident process. The goal is not to make the history look clean; it is to make the secret unusable, limit access and preserve enough safe evidence to fix the underlying defect.",[21,857,858,859,862],{},"For the complete functional workflow that produces this evidence, use the ",[28,860,861],{"href":632},"developer email testing checklist",". Together, the two practices keep a mail-flow defect reproducible without turning its report into a second security incident.",{"title":234,"searchDepth":235,"depth":235,"links":864},[865,866,867,868,869,870,871,872],{"id":667,"depth":235,"text":668},{"id":680,"depth":235,"text":681},{"id":733,"depth":235,"text":734},{"id":755,"depth":235,"text":756},{"id":780,"depth":235,"text":781},{"id":805,"depth":235,"text":806},{"id":815,"depth":235,"text":816},{"id":848,"depth":235,"text":849},{"originalAnalysis":874,"trendContext":875,"practicalValue":876},"We work backward from the defect question to minimise collected evidence, separating proof needed for reproduction from secrets and unrelated personal data.","Cloud issue trackers and distributed teams make evidence easier to share and harder to retract, increasing the value of revocation, cropping and synthetic samples.","Readers can produce useful screenshots, headers and bug reports while removing live credentials, identifiers and context that does not support the diagnosis.","Create useful screenshots, headers and bug reports while removing verification codes, reset tokens, email addresses, identifiers and unrelated personal data.",{"src":879},"\u002Fimages\u002Fblog\u002Fsafe-email-test-evidence-cover.webp",{},[882,635],"email-testing-checklist",[884],"text-hash","Once Email privacy review",{"title":644,"description":877},"3.blog\u002F11.safe-email-test-evidence",[640,386],"_wYmJ0JOE6D1NOHSe0XAHD-1w6FZ2RGsm1y_CHBsILM",{"id":891,"title":892,"audience":893,"authors":894,"badge":897,"body":899,"category":1171,"contentQuality":1172,"date":387,"description":1176,"extension":253,"featured":254,"image":1177,"indexable":257,"locale":258,"meta":1179,"navigation":257,"path":1180,"relatedPosts":1181,"relatedTools":1184,"reviewedBy":382,"seo":1185,"stem":1186,"topics":1187,"updated":387,"userTask":1175,"verifiedAt":387,"__hash__":1188},"posts\u002F3.blog\u002F12.email-address-types.md","Email Alias vs Temporary Inbox vs Permanent Address: Which Should You Use?",[7],[895],{"name":11,"to":12,"avatar":896},{"src":14},{"label":898},"Address choices",{"type":18,"value":900,"toc":1163},[901,904,907,911,918,931,937,941,1064,1067,1071,1074,1083,1086,1090,1093,1096,1110,1118,1122,1125,1128,1136,1140,1143,1160],[21,902,903],{},"An email alias, a temporary inbox and a permanent email account can all keep a primary address out of a sign-up form, but they are not interchangeable. The right choice depends on what must happen after the first message arrives: whether you need to reply, recover an account, retain receipts or disable one address without losing the underlying mailbox.",[21,905,906],{},"This guide uses “temporary inbox” to mean a short-lived receiving address such as Once Email. Once Email receives messages only. It does not send mail, forward messages into a private account or promise that an address will remain available indefinitely.",[37,908,910],{"id":909},"the-three-address-types-in-plain-language","The three address types in plain language",[21,912,913,914,917],{},"A ",[75,915,916],{},"permanent email account"," is the mailbox you expect to control over time. It normally has its own sign-in, storage, sending capability, recovery settings and security controls. “Permanent” does not mean indestructible: the provider, domain or account can still change. It means that continuity is part of the design and that you are responsible for maintaining access.",[21,919,920,921,924,925,930],{},"An ",[75,922,923],{},"email alias"," is another address that routes mail to an existing mailbox. ",[28,926,929],{"href":927,"rel":928},"https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc5321#section-3.9.1",[51],"RFC 5321 describes an alias"," as replacing the envelope recipient while leaving the rest of the envelope and message body unchanged. In a consumer or workplace product, the practical result is that mail sent to the alias arrives in the primary inbox. The exact reply, filtering, deletion and recovery features depend on the provider.",[21,932,913,933,936],{},[75,934,935],{},"temporary inbox"," creates a separate, short-lived place to receive mail. It is useful when the message itself is short-lived and losing future access will not damage an account or record. Unlike a forwarding alias, a Once Email inbox does not route the message into your permanent mailbox.",[37,938,940],{"id":939},"compare-the-consequences-not-just-the-address","Compare the consequences, not just the address",[942,943,944,963],"table",{},[945,946,947],"thead",{},[948,949,950,954,957,960],"tr",{},[951,952,953],"th",{},"Decision factor",[951,955,956],{},"Forwarding alias",[951,958,959],{},"Temporary inbox",[951,961,962],{},"Permanent account",[964,965,966,981,995,1009,1023,1036,1050],"tbody",{},[948,967,968,972,975,978],{},[969,970,971],"td",{},"Where messages arrive",[969,973,974],{},"Existing mailbox",[969,976,977],{},"Separate short-lived inbox",[969,979,980],{},"Its own long-term mailbox",[948,982,983,986,989,992],{},[969,984,985],{},"Long-term recovery",[969,987,988],{},"Depends on the underlying mailbox and alias",[969,990,991],{},"Poor choice",[969,993,994],{},"Usually the strongest choice",[948,996,997,1000,1003,1006],{},[969,998,999],{},"Reply and ongoing conversation",[969,1001,1002],{},"Provider-dependent",[969,1004,1005],{},"Not supported by Once Email",[969,1007,1008],{},"Normally supported",[948,1010,1011,1014,1017,1020],{},[969,1012,1013],{},"Separate an organisation from your main address",[969,1015,1016],{},"Good when aliases can be disabled individually",[969,1018,1019],{},"Good for short-lived, low-risk receipt",[969,1021,1022],{},"Requires another account or address",[948,1024,1025,1028,1031,1033],{},[969,1026,1027],{},"Preserve receipts and notices",[969,1029,1030],{},"Good while forwarding remains configured",[969,1032,991],{},[969,1034,1035],{},"Good with retention and backups",[948,1037,1038,1041,1044,1047],{},[969,1039,1040],{},"Exposure if a site leaks the submitted address",[969,1042,1043],{},"Alias is exposed, primary address may remain hidden",[969,1045,1046],{},"Temporary address is exposed",[969,1048,1049],{},"Permanent address is exposed",[948,1051,1052,1055,1058,1061],{},[969,1053,1054],{},"Effect of losing the address",[969,1056,1057],{},"May break that service until changed",[969,1059,1060],{},"Future messages become unavailable",[969,1062,1063],{},"Can affect many services",[21,1065,1066],{},"The table is a decision aid, not a guarantee. An alias provider may keep logs, a temporary address may be visible to anyone who knows it, and a permanent mailbox may be compromised. Address choice does not replace a unique password, multi-factor authentication or careful review of messages and links.",[37,1068,1070],{"id":1069},"choose-an-alias-for-separation-with-continuity","Choose an alias for separation with continuity",[21,1072,1073],{},"An alias is often the best fit when you want to identify which organisation received an address while still keeping messages in a mailbox you regularly monitor. It can work for newsletters, shopping, software accounts and project roles when the provider lets you disable or replace one alias without changing your primary sign-in.",[21,1075,1076,1077,1082],{},"Google Workspace's ",[28,1078,1081],{"href":1079,"rel":1080},"https:\u002F\u002Fsupport.google.com\u002Fa\u002Fanswer\u002F33327",[51],"official alias documentation"," provides a concrete example: an administrator can add an alternate address whose messages route to the user's primary inbox. It also notes an important limitation—an alias is not a separate Google Account. Other providers implement aliases differently, so confirm whether an alias can send replies, whether replies reveal the primary address, and what happens if the alias is removed.",[21,1084,1085],{},"Use an alias only when forwarding into the permanent mailbox is acceptable. If the goal is to prevent a message from entering that mailbox at all, a separate temporary inbox provides a clearer boundary.",[37,1087,1089],{"id":1088},"choose-a-temporary-inbox-for-a-short-lived-low-risk-receipt","Choose a temporary inbox for a short-lived, low-risk receipt",[21,1091,1092],{},"A temporary inbox fits an authorised software test, a preview download or another interaction where you only need to receive a confirmation and where the service permits disposable addresses. It limits how often the primary address is entered into unrelated systems and keeps short-lived test mail away from a long-term inbox.",[21,1094,1095],{},"Before using one, ask four questions:",[65,1097,1098,1101,1104,1107],{},[68,1099,1100],{},"Will I need this address to reset a password later?",[68,1102,1103],{},"Will the service send receipts, security warnings or legal records here?",[68,1105,1106],{},"Do I need to reply or maintain a conversation?",[68,1108,1109],{},"Does the website allow temporary addresses for this purpose?",[21,1111,1112,1113,1117],{},"If any answer points to ongoing access, use a controlled permanent account or a durable alias. A temporary inbox is particularly unsuitable for banking, government, healthcare, employment, paid subscriptions, domain ownership or a primary account recovery address. Read the ",[28,1114,1116],{"href":1115},"\u002Fblog\u002Freadbook","temporary inbox lifetime guide"," before relying on an expiry timer.",[37,1119,1121],{"id":1120},"choose-a-permanent-address-when-continuity-is-part-of-the-transaction","Choose a permanent address when continuity is part of the transaction",[21,1123,1124],{},"Use a permanent address for anything tied to identity, money, ownership, recurring service or long-term records. It is also the safer default when an account may need recovery months or years later.",[21,1126,1127],{},"Set it up as a maintained security asset: use a unique password, enable an appropriate second factor, protect its own recovery methods and review active sessions. Do not use one permanent address everywhere simply because it lasts; a managed alias can still reduce unnecessary exposure while preserving delivery.",[21,1129,446,1130,1135],{},[28,1131,1134],{"href":1132,"rel":1133},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002F",[51],"NIST Digital Identity Guidelines"," treat recovery as part of the authenticator lifecycle rather than an afterthought. For a user, the practical lesson is simple: if email is part of account recovery, losing control of that email can become losing control of the account.",[37,1137,1139],{"id":1138},"a-quick-decision-sequence","A quick decision sequence",[21,1141,1142],{},"Start with the consequence of losing future mail.",[200,1144,1145,1148,1151,1154,1157],{},[68,1146,1147],{},"If losing future mail could block recovery, payment records or ownership, use a permanent address, optionally protected by a durable alias.",[68,1149,1150],{},"If you need ongoing messages but want per-service separation, use an alias whose forwarding and reply behaviour you understand.",[68,1152,1153],{},"If you need one or two low-risk incoming messages and can safely abandon the interaction, a temporary inbox may fit.",[68,1155,1156],{},"If the website prohibits disposable addresses, respect that rule. Do not cycle domains or manipulate the address to evade its controls.",[68,1158,1159],{},"If the message or attachment is sensitive, address type alone is not protection. Verify the sender and inspect links before acting.",[21,1161,1162],{},"There is no universally “most private” address. A useful choice is one whose lifetime, destination and recovery consequences match the task. Use the least persistent option that still preserves the access and records you genuinely need.",{"title":234,"searchDepth":235,"depth":235,"links":1164},[1165,1166,1167,1168,1169,1170],{"id":909,"depth":235,"text":910},{"id":939,"depth":235,"text":940},{"id":1069,"depth":235,"text":1070},{"id":1088,"depth":235,"text":1089},{"id":1120,"depth":235,"text":1121},{"id":1138,"depth":235,"text":1139},"choosing-addresses",{"originalAnalysis":1173,"trendContext":1174,"practicalValue":1175},"The comparison evaluates permanent accounts, forwarding aliases and temporary inboxes across recovery, reply, retention, disablement and website-policy consequences.","Alias services and privacy controls are expanding, but feature details vary by provider and do not remove the need for durable recovery on important accounts.","Readers can choose an address architecture for a real relationship and avoid confusing address separation, forwarding and temporary receiving as equivalent tools.","Compare forwarding aliases, receive-only temporary inboxes and permanent email accounts by recovery, privacy, replies, record keeping and website policy.",{"src":1178},"\u002Fimages\u002Fblog\u002Femail-address-types-cover.webp",{},"\u002Fblog\u002Femail-address-types",[1182,1183],"difference","privacy-first-email-decision-tree",[],{"title":892,"description":1176},"3.blog\u002F12.email-address-types",[386],"U7Rp4drKkg-XX98PDz7hUwE4CcShihdRLcErvrdEm_M",{"id":1190,"title":1191,"audience":1192,"authors":1194,"badge":1197,"body":1199,"category":367,"contentQuality":1321,"date":387,"description":1325,"extension":253,"featured":254,"image":1326,"indexable":257,"locale":258,"meta":1328,"navigation":257,"path":1329,"relatedPosts":1330,"relatedTools":1332,"reviewedBy":1333,"seo":1334,"stem":1335,"topics":1336,"updated":387,"userTask":1324,"verifiedAt":387,"__hash__":1338},"posts\u002F3.blog\u002F13.why-sites-reject-disposable-email.md","Why Some Websites Reject Disposable Email Addresses",[7,1193],"product-team",[1195],{"name":11,"to":12,"avatar":1196},{"src":14},{"label":1198},"Website policies",{"type":18,"value":1200,"toc":1312},[1201,1204,1207,1211,1214,1221,1224,1228,1231,1234,1237,1241,1244,1247,1251,1258,1261,1265,1273,1280,1284,1287,1290,1296,1299,1303,1306,1309],[21,1202,1203],{},"Some websites accept a temporary email address without difficulty. Others warn that the domain is unsupported, require another address or review the registration. That decision is normally part of the website's product and abuse policy, not proof that the address is technically incapable of receiving mail.",[21,1205,1206],{},"Once Email is a receive-only temporary inbox. It should be used only where the website permits it and where losing future access will not create an account-recovery problem. This article explains common reasons for restrictions; it does not provide methods for disguising or cycling a disposable address to bypass them.",[37,1208,1210],{"id":1209},"delivery-is-only-one-part-of-an-account-relationship","Delivery is only one part of an account relationship",[21,1212,1213],{},"An address can receive a verification message and still be a poor long-term account identifier. A website may expect to send password-reset links, security warnings, billing notices, export links or policy updates long after sign-up. If the mailbox expires or changes hands, the user may lose those notices or another person may receive them.",[21,1215,1216,1217,1220],{},"This matters most when email is a recovery channel. The current ",[28,1218,1134],{"href":1132,"rel":1219},[51]," describe account recovery as part of credential lifecycle management. A website does not have to follow NIST's exact assurance model to reach the same practical conclusion: an unreachable recovery address increases support work and can increase the risk of account loss.",[21,1222,1223],{},"For a low-risk preview or an authorised test, long-term recovery may be irrelevant. For a paid product, saved data or identity-linked account, it is usually central.",[37,1225,1227],{"id":1226},"restrictions-can-be-an-abuse-control-signal","Restrictions can be an abuse-control signal",[21,1229,1230],{},"Websites often offer something scarce at registration: a free trial, a limited download, promotional credit, community posting rights, API quota or access to other users. Disposable addresses can make it cheaper to create repeated accounts after a limit or enforcement action.",[21,1232,1233],{},"Blocking a known temporary domain is one possible signal in a wider risk system. It is not a perfect signal. Legitimate users may value address separation, while an abusive user can also use a permanent mailbox or a compromised account. Responsible services therefore avoid treating the email domain as proof of intent and combine it with proportionate controls such as rate limits, verified payment where appropriate, device and session security, and review of actual behaviour.",[21,1235,1236],{},"Users should not interpret an acceptance as permission to create multiple accounts. The site's terms and the purpose of the account still apply.",[37,1238,1240],{"id":1239},"support-teams-need-a-stable-way-to-resolve-ownership","Support teams need a stable way to resolve ownership",[21,1242,1243],{},"When a user contacts support after losing a password, the provider needs a safe way to establish ownership without handing the account to an impostor. An expired inbox weakens one of the available signals. The provider may then need a manual process involving payment records, backup codes or other evidence, and it may still be unable to restore access.",[21,1245,1246],{},"This is why an address that is convenient for a ten-minute transaction can be a poor fit for an account expected to last years. If losing the mailbox would make you ask support to override normal recovery, use a durable address from the start.",[37,1248,1250],{"id":1249},"reputation-lists-are-incomplete-and-can-be-wrong","Reputation lists are incomplete and can be wrong",[21,1252,1253,1254,1257],{},"A simple implementation compares the domain after ",[95,1255,1256],{},"@"," with a list of known disposable-email providers. More advanced systems may also examine domain age, mail configuration, delivery history or account behaviour. These systems change over time and can produce false positives—for example, a new organisation domain or a privacy-focused forwarding service might be classified incorrectly.",[21,1259,1260],{},"An error message should therefore explain the accepted alternatives and provide a support route when the restriction affects a legitimate user. From the user's side, changing punctuation, adding subdomains or repeatedly generating addresses to defeat the check is not a responsible fix. It can violate the site's terms and may trigger stronger controls.",[37,1262,1264],{"id":1263},"a-forwarding-alias-is-not-always-the-same-as-a-temporary-inbox","A forwarding alias is not always the same as a temporary inbox",[21,1266,1267,1268,1272],{},"A forwarding alias routes mail into a mailbox the user continues to control. ",[28,1269,1271],{"href":927,"rel":1270},[51],"RFC 5321's alias model"," changes the envelope recipient and forwards the message while leaving its body unchanged. A temporary inbox stores received messages separately for a limited period. Those differences affect recovery and continuity, even if both keep a primary address out of a sign-up form.",[21,1274,1275,1276,1279],{},"Some websites allow forwarding aliases but block known temporary inbox domains; others disallow both; many accept either. The correct choice comes from the site's published rules and the account's real recovery needs. Use the ",[28,1277,1278],{"href":1180},"email address type comparison"," to decide without assuming every privacy-oriented address works the same way.",[37,1281,1283],{"id":1282},"what-a-legitimate-user-should-do-after-rejection","What a legitimate user should do after rejection",[21,1285,1286],{},"First, read the message and the website's terms. If the service requires a durable address and the account has ongoing value, use a permanent address you control or an allowed alias backed by that mailbox.",[21,1288,1289],{},"If you believe a work, school, custom-domain or forwarding address was incorrectly classified, contact the site's support team. Provide only the information needed to review the domain; never send a password, verification code or complete reset link.",[21,1291,1292,1293,1295],{},"If you are testing your own application, keep temporary-domain behaviour in the test specification. Verify the allowed and rejected paths with addresses and domains your organisation is authorised to use. Do not use a public website as an unapproved target for repeated registration tests. The ",[28,1294,861],{"href":632}," covers safer end-to-end cases.",[21,1297,1298],{},"Finally, if you do not want to provide a permanent address, decide whether to leave the service. Privacy is also the ability to decline a transaction whose data requirements do not match your needs.",[37,1300,1302],{"id":1301},"guidance-for-website-owners","Guidance for website owners",[21,1304,1305],{},"A blanket block may reduce one type of repeat registration while excluding legitimate privacy-conscious users and authorised testers. Before adopting it, define the exact harm being controlled, measure false positives and provide a clear recovery or support path.",[21,1307,1308],{},"Avoid claiming that every disposable address is fraudulent or insecure. Explain the requirement in plain language, minimise the personal data collected, secure retained addresses and apply enforcement to abusive behaviour as well as domain reputation. If a temporary address is acceptable for a low-risk action but not for a recoverable account, make that distinction in the product flow.",[21,1310,1311],{},"Disposable-email restrictions are ultimately a policy choice. The safe response is to match the address to the account's lifetime and respect the site's rules—not to search for a technical disguise.",{"title":234,"searchDepth":235,"depth":235,"links":1313},[1314,1315,1316,1317,1318,1319,1320],{"id":1209,"depth":235,"text":1210},{"id":1226,"depth":235,"text":1227},{"id":1239,"depth":235,"text":1240},{"id":1249,"depth":235,"text":1250},{"id":1263,"depth":235,"text":1264},{"id":1282,"depth":235,"text":1283},{"id":1301,"depth":235,"text":1302},{"originalAnalysis":1322,"trendContext":1323,"practicalValue":1324},"We explain rejection through the website operator’s recovery, support, fraud and lifecycle incentives while deliberately excluding evasion tactics.","Disposable-domain detection and risk scoring change frequently, so a domain accepted today may be reviewed later; the underlying continuity concern remains stable.","Legitimate users can understand a rejection, choose an allowed durable address and avoid creating an account that cannot receive future security notices.","Understand the account-recovery, abuse, support and risk reasons behind disposable-email restrictions—and what legitimate users should do instead of evading them.",{"src":1327},"\u002Fimages\u002Fblog\u002Fdisposable-email-rejection-cover.webp",{},"\u002Fblog\u002Fwhy-sites-reject-disposable-email",[1331,379],"helloworld",[],"Once Email abuse and editorial review",{"title":1191,"description":1325},"3.blog\u002F13.why-sites-reject-disposable-email",[386,1337],"delivery","f0surT84Zg5SwmW1a2fjND8WHBbFbRvA2lqnOuH8J-k",{"id":1340,"title":1341,"audience":1342,"authors":1343,"badge":1346,"body":1348,"category":1588,"contentQuality":1589,"date":1593,"description":1594,"extension":253,"featured":254,"image":1595,"indexable":257,"locale":258,"meta":1597,"navigation":257,"path":1598,"relatedPosts":1599,"relatedTools":1602,"reviewedBy":266,"seo":1604,"stem":1605,"topics":1606,"updated":1593,"userTask":1592,"verifiedAt":1593,"__hash__":1608},"posts\u002F3.blog\u002F14.read-received-headers.md","How to Read Received Headers and Trace an Email Delivery Path",[393,8],[1344],{"name":11,"to":12,"avatar":1345},{"src":14},{"label":1347},"Delivery analysis",{"type":18,"value":1349,"toc":1579},[1350,1356,1359,1363,1371,1377,1380,1415,1418,1422,1428,1431,1437,1440,1464,1467,1471,1474,1477,1480,1500,1505,1509,1515,1518,1528,1532,1537,1549,1553,1562,1569,1573,1576],[21,1351,1352,1353,1355],{},"An email can pass through an application server, an outbound relay, a filtering service and the recipient's mail exchanger before it reaches an inbox. Each receiving SMTP server normally adds a ",[95,1354,790],{}," field. Reading those fields can help locate a delay, identify the server that handed mail to your provider and build a delivery timeline.",[21,1357,1358],{},"The fields are diagnostic evidence, not a complete chain of custody. A sender can add fake lines before transmission, clocks can disagree and private infrastructure may hide or rewrite details. Use the trace together with provider logs, authentication results and the context of the message.",[37,1360,1362],{"id":1361},"what-a-received-field-records","What a Received field records",[21,1364,1365,1370],{},[28,1366,1369],{"href":1367,"rel":1368},"https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc5321#section-4.4",[51],"RFC 5321 section 4.4"," requires an SMTP server that receives a message for delivery or further processing to prepend trace information. A typical field looks like this:",[767,1372,1375],{"className":1373,"code":1374,"language":772,"meta":234},[770],"Received: from outbound.example.com (outbound.example.com [192.0.2.10])\n        by mx.example.net with ESMTPS id ABC123\n        for \u003Crecipient@example.net>;\n        Mon, 03 Aug 2026 10:30:04 +0000\n",[95,1376,1374],{"__ignoreMap":234},[21,1378,1379],{},"Common clauses answer different questions:",[200,1381,1382,1388,1394,1400,1406,1412],{},[68,1383,1384,1387],{},[95,1385,1386],{},"from"," describes the host presented by the sending side and may include the address observed on the network connection;",[68,1389,1390,1393],{},[95,1391,1392],{},"by"," identifies the server that accepted this hop and wrote the field;",[68,1395,1396,1399],{},[95,1397,1398],{},"with"," describes the transport or protocol variant, such as ESMTP or encrypted SMTP;",[68,1401,1402,1405],{},[95,1403,1404],{},"id"," is a queue or transaction identifier useful when an administrator can search that server's logs;",[68,1407,1408,1411],{},[95,1409,1410],{},"for"," may identify one envelope recipient, although it is optional and can be removed for privacy;",[68,1413,1414],{},"the date after the semicolon records when the receiving server accepted the message, including a numeric time-zone offset.",[21,1416,1417],{},"Not every field contains every clause. Gateways and non-SMTP systems can produce unfamiliar formats. RFC 5321 explicitly tells receiving systems to be robust with unexpected trace formatting rather than rejecting a message merely because a trace line looks unusual.",[37,1419,1421],{"id":1420},"read-the-route-from-the-bottom-upward","Read the route from the bottom upward",[21,1423,1424,1425,1427],{},"SMTP servers prepend new ",[95,1426,790],{}," fields above the existing ones. The newest receiving hop is therefore at the top of the header block; the earliest recorded hop is usually at the bottom.",[21,1429,1430],{},"Consider this simplified trace:",[767,1432,1435],{"className":1433,"code":1434,"language":772,"meta":234},[770],"Received: from filter.example.net by mx.recipient.example;\n        Mon, 03 Aug 2026 10:30:07 +0000\nReceived: from outbound.sender.example by filter.example.net;\n        Mon, 03 Aug 2026 10:30:04 +0000\nReceived: from app.internal.example by outbound.sender.example;\n        Mon, 03 Aug 2026 10:29:59 +0000\n",[95,1436,1434],{"__ignoreMap":234},[21,1438,1439],{},"Read it as:",[65,1441,1442,1451,1457],{},[68,1443,1444,1447,1448,53],{},[95,1445,1446],{},"app.internal.example"," handed the message to ",[95,1449,1450],{},"outbound.sender.example",[68,1452,1453,1454,53],{},"The outbound server handed it to ",[95,1455,1456],{},"filter.example.net",[68,1458,1459,1460,1463],{},"The filter handed it to the recipient's ",[95,1461,1462],{},"mx.recipient.example"," server.",[21,1465,1466],{},"Do not sort the fields by their visible timestamps. The protocol-defined field order is more useful because server clocks may be wrong or unsynchronised. Convert each timestamp to one time zone only when estimating delay, and preserve the original value in any evidence record.",[37,1468,1470],{"id":1469},"calculate-delay-carefully","Calculate delay carefully",[21,1472,1473],{},"For each adjacent pair, subtract the earlier receiving time from the later one after applying the numeric offsets. A large positive gap can indicate queueing, rate limiting, a temporary network failure or processing at the next service. It does not identify the cause by itself.",[21,1475,1476],{},"A negative gap usually points to clock skew, a parsing mistake or an untrusted field—not time travel and not automatic proof of forgery. Check whether the offsets were handled correctly and whether the two lines were written by systems you control.",[21,1478,1479],{},"When investigating your own application, correlate the trace with:",[200,1481,1482,1485,1488,1494,1497],{},[68,1483,1484],{},"the UTC time at which the application requested the message;",[68,1486,1487],{},"the sender's queue ID and delivery log;",[68,1489,1490,1491,1493],{},"the first ",[95,1492,790],{}," field written by infrastructure you trust;",[68,1495,1496],{},"the time the recipient provider reports accepting or displaying it;",[68,1498,1499],{},"any retry status or SMTP response recorded by the sending system.",[21,1501,446,1502,1504],{},[28,1503,861],{"href":632}," explains how to record the request-to-arrival timeline without treating one inbox observation as the whole delivery system.",[37,1506,1508],{"id":1507},"decide-which-hop-you-can-trust","Decide which hop you can trust",[21,1510,1511,1512,1514],{},"The topmost ",[95,1513,790],{}," field was added by the server closest to the mailbox you are viewing. If that mailbox provider is trusted, this field is usually the strongest starting point: it can report the network address from which the provider actually accepted the message.",[21,1516,1517],{},"Work downward only as far as the fields remain consistent with infrastructure you recognise. Lines allegedly created before the message entered a trusted provider can be fabricated by the sender. A malicious sender cannot normally rewrite fields already added later by the recipient's systems, but it can place plausible-looking trace text in the message before those systems see it.",[21,1519,1520,1521,1523,1524,1527],{},"Hostnames also require context. A ",[95,1522,1386],{}," name may come from an SMTP greeting, reverse DNS or local configuration. A private address such as ",[95,1525,1526],{},"10.0.0.0\u002F8"," can describe an internal hop but cannot be traced directly across the public Internet. An IP geolocation result is approximate and does not establish the identity or physical location of the author.",[37,1529,1531],{"id":1530},"received-fields-do-not-replace-authentication","Received fields do not replace authentication",[21,1533,1534,1536],{},[95,1535,790],{}," fields describe transport hops. SPF, DKIM and DMARC evaluate different evidence about domain authorisation, signatures and alignment. A route that looks ordinary can carry a malicious message, and a legitimate forwarded message can have a complicated route.",[21,1538,1539,1540,1544,1545,1548],{},"Use the ",[28,1541,1543],{"href":1542},"\u002Fblog\u002Fcorecomponent","SPF, DKIM and DMARC guide"," to interpret authentication results separately. Do not infer that the visible ",[95,1546,1547],{},"From"," address controlled every host in the route, or that a familiar relay makes the content safe.",[37,1550,1552],{"id":1551},"use-the-local-header-analyser-without-oversharing","Use the local header analyser without oversharing",[21,1554,1555,1556,1558,1559,1561],{},"The Once Email ",[28,1557,751],{"href":750}," extracts ",[95,1560,790],{}," hops, authentication results and repeated fields in the browser. Paste header fields only—never a password, verification code, message body or attachment. The tool does not contact the listed servers, verify their logs or prove that a field is genuine.",[21,1563,1564,1565,1568],{},"Before sharing results, replace personal addresses, public IP addresses, queue IDs and internal hostnames while retaining the order and time offsets needed to reproduce the issue. The ",[28,1566,1567],{"href":603},"test evidence redaction guide"," provides a safer reporting pattern.",[37,1570,1572],{"id":1571},"a-reliable-interpretation-checklist","A reliable interpretation checklist",[21,1574,1575],{},"Start at the top to identify the final receiving system, then reconstruct the path from the bottom upward. Trust the field order before the clocks. Normalise time zones, flag negative or unusually long intervals, and mark the boundary between trusted and sender-controlled infrastructure. Correlate queue IDs with authorised server logs when available.",[21,1577,1578],{},"Most importantly, state the limit of the conclusion. A trace may support “the recipient provider accepted this connection from this relay at this time.” It usually cannot prove who wrote the message, whether every earlier hop is genuine or whether its links and attachments are safe.",{"title":234,"searchDepth":235,"depth":235,"links":1580},[1581,1582,1583,1584,1585,1586,1587],{"id":1361,"depth":235,"text":1362},{"id":1420,"depth":235,"text":1421},{"id":1469,"depth":235,"text":1470},{"id":1507,"depth":235,"text":1508},{"id":1530,"depth":235,"text":1531},{"id":1551,"depth":235,"text":1552},{"id":1571,"depth":235,"text":1572},"delivery-authentication",{"originalAnalysis":1590,"trendContext":1591,"practicalValue":1592},"The trace method reads hops from the trusted receiving boundary backward and separates observed relay evidence from lines an untrusted sender could fabricate.","Cloud relays, filtering gateways and privacy proxies add more hops and rewriting, but each trusted receiver prepending its own trace remains the useful anchor.","Readers can build a timestamped delivery path, spot plausible delay points and describe the limits of hostnames, addresses and unsynchronised clocks.","2026-08-03","Follow Received header fields in the correct order, compare timestamps safely and recognise the limits of hostnames, IP addresses and untrusted trace data.",{"src":1596},"\u002Fimages\u002Fblog\u002Fread-received-headers-cover.webp",{},"\u002Fblog\u002Fread-received-headers",[1600,1601],"anxiety","corecomponent",[1603],"email-header-analyzer",{"title":1341,"description":1594},"3.blog\u002F14.read-received-headers",[1337,1607],"authentication","pMAUinbhhyh0ueOMEMj3ErMP3K56tWU5REnvSkYqe4k",{"id":1610,"title":1611,"audience":1612,"authors":1613,"badge":1616,"body":1618,"category":246,"contentQuality":1763,"date":1593,"description":1767,"extension":253,"featured":254,"image":1768,"indexable":257,"locale":258,"meta":1770,"navigation":257,"path":1771,"relatedPosts":1772,"relatedTools":1774,"reviewedBy":1776,"seo":1777,"stem":1778,"topics":1779,"updated":1593,"userTask":1766,"verifiedAt":1593,"__hash__":1781},"posts\u002F3.blog\u002F15.attachment-safety-checklist.md","A Safe Checklist Before Downloading an Email Attachment",[7,8],[1614],{"name":11,"to":12,"avatar":1615},{"src":14},{"label":1617},"Attachment safety",{"type":18,"value":1619,"toc":1753},[1620,1623,1626,1630,1633,1641,1644,1648,1654,1657,1663,1667,1674,1677,1686,1690,1697,1700,1704,1707,1710,1713,1717,1720,1730,1734,1737,1740,1743,1747,1750],[21,1621,1622],{},"An attachment can be dangerous even when its filename looks ordinary, the message uses a familiar logo or the sender's domain passes email authentication. Before downloading, decide whether the file was expected, whether you can verify the request independently and whether the device and software you plan to use are appropriate for the risk.",[21,1624,1625],{},"Once Email receives attachments but does not send mail and does not claim to scan files for malware. A displayed filename, MIME type or download link is descriptive metadata, not a safety verdict.",[37,1627,1629],{"id":1628},"_1-stop-if-the-attachment-was-not-expected","1. Stop if the attachment was not expected",[21,1631,1632],{},"Ask what real event should have produced the file. Did you request an export, apply for the document, open a support case or agree that this person would send it? Urgency is not evidence. An unexpected invoice, delivery notice, résumé, legal threat or “security report” should be treated as unverified even when the topic feels plausible.",[21,1634,1635,1636,1640],{},"Microsoft's ",[28,1637,52],{"href":1638,"rel":1639},"https:\u002F\u002Fsupport.microsoft.com\u002Fen-us\u002Fsecurity\u002Fprotect-yourself-from-phishing",[51]," advises users not to open suspicious links or unexpected attachments and to contact the organisation through official contact information. Do not reply to the message and ask whether it is real if the mailbox or sender account itself may be compromised. Use a phone number, application or website you already trust.",[21,1642,1643],{},"If you cannot explain why the file arrived, the safest download is no download.",[37,1645,1647],{"id":1646},"_2-verify-the-sender-through-a-separate-channel","2. Verify the sender through a separate channel",[21,1649,1650,1651,1653],{},"The visible display name can be copied. A ",[95,1652,1547],{}," address can be forged, and a genuine account can be compromised. SPF, DKIM and DMARC results provide useful domain-level evidence but do not certify the sender's intent or the attachment contents.",[21,1655,1656],{},"For an important file, confirm with the sender using an established conversation or known contact method. Ask for the purpose and expected filename, not a password or secret. If a company supposedly sent the document, open its official site or application independently instead of using a link in the same message.",[21,1658,446,1659,1662],{},[28,1660,1661],{"href":1542},"email authentication guide"," can help you interpret header results, but a passing result never replaces this contextual check.",[37,1664,1666],{"id":1665},"_3-read-the-full-filename-not-just-the-icon","3. Read the full filename, not just the icon",[21,1668,1669,1670,1673],{},"Enable display of complete filenames and extensions in the operating system. Attackers can use long names, repeated spaces, right-to-left characters or multiple extensions to make an executable resemble a document. A file named ",[95,1671,1672],{},"statement.pdf.exe"," is an executable regardless of the PDF word in the middle.",[21,1675,1676],{},"Treat executable and script-capable formats as high risk, including platform-specific installers, scripts, shortcuts and disk images. Office documents and PDFs are not automatically harmless: they can contain active content, links or exploit malformed file parsers. Archives can conceal the real file type and may be password-protected specifically to prevent a mail provider from inspecting their contents.",[21,1678,1679,1680,1685],{},"Do not rename a blocked file to force it open. A mail client warning is a reason to verify the delivery method with the sender or security team, not a puzzle to bypass. Microsoft documents that Outlook ",[28,1681,1684],{"href":1682,"rel":1683},"https:\u002F\u002Fsupport.microsoft.com\u002Fen-us\u002Foutlook\u002Foutlook-blocked-access-to-the-following-potentially-unsafe-attachments",[51],"blocks attachment types considered potentially unsafe","; the exact block list is product-specific and should not be treated as a complete malware list.",[37,1687,1689],{"id":1688},"_4-compare-metadata-but-do-not-trust-it-alone","4. Compare metadata, but do not trust it alone",[21,1691,1692,1693,1696],{},"The message may declare a MIME type such as ",[95,1694,1695],{},"application\u002Fpdf",", while the downloaded bytes represent another format. The filename extension and declared type can both be incorrect or intentionally misleading. A file-size value is also not proof: a tiny script can be harmful, while a large archive may merely be inconvenient.",[21,1698,1699],{},"Use metadata to find inconsistencies, not to certify safety. If an expected PDF is described as an executable, or the sender expected one image but the message contains an encrypted archive, stop and verify. Once Email displays attachment information supplied through the received message; it does not guarantee that the data matches the file's true format.",[37,1701,1703],{"id":1702},"_5-protect-the-device-before-saving-or-opening","5. Protect the device before saving or opening",[21,1705,1706],{},"Keep the operating system, browser, document viewer and security software current. Save the file without automatically opening it. Scan it with the security controls approved for the device or organisation, and follow any quarantine warning.",[21,1708,1709],{},"A clean scan reduces known risk but does not prove a file is safe. New or targeted malware may not be detected, and online scanning services may retain or share uploaded samples. Do not upload a confidential contract, personal record, source archive or customer file to a public scanner without authority and a clear data-handling policy.",[21,1711,1712],{},"For higher-risk authorised analysis, use an organisation-managed isolated environment and involve the security team. A personal computer, production server or device holding valuable credentials is not an appropriate malware laboratory. Do not execute a suspicious file merely to see what it does.",[37,1714,1716],{"id":1715},"_6-consider-whether-you-need-the-file-at-all","6. Consider whether you need the file at all",[21,1718,1719],{},"Many legitimate services provide the same document inside a signed-in portal. Retrieving it from the known application can be safer than opening an email attachment. Ask whether a plain-text summary, protected file share or newly generated export would meet the need.",[21,1721,1722,1723,1726,1727,1729],{},"If the attachment contains a verification code or temporary record, save only the minimum information needed and respect its retention requirements. The ",[28,1724,1725],{"href":603},"email test evidence guide"," explains why copying a complete ",[95,1728,743],{}," message or mailbox export can expose unrelated headers, tokens and personal data.",[37,1731,1733],{"id":1732},"_7-report-suspicious-mail-without-spreading-the-file","7. Report suspicious mail without spreading the file",[21,1735,1736],{},"Use the mail provider's phishing or abuse-reporting function when available. In a workplace, follow the security team's reporting channel. Do not forward a suspicious attachment casually to colleagues; forwarding can create more copies and more opportunities to open it.",[21,1738,1739],{},"Record a minimal description: when it arrived, the claimed sender, why it was unexpected, the filename and the warning shown. Redact recipient addresses, tokens and internal identifiers before placing evidence in a broadly visible ticket. Preserve the original message only according to an authorised incident process.",[21,1741,1742],{},"If you already opened the file and the device behaves unexpectedly, disconnect from sensitive work as your organisation directs and contact its security support. Do not hide the event or continue entering passwords while investigating alone.",[37,1744,1746],{"id":1745},"download-decision","Download decision",[21,1748,1749],{},"Download only when you expected the file, verified the sender through a trusted route, understand the complete filename and format, and have an appropriate patched environment for handling it. Stop when the message creates urgency without context, the file type conflicts with the request, a client blocks it or the only way forward is to weaken a security control.",[21,1751,1752],{},"An attachment arriving successfully proves delivery, not safety. The goal of the checklist is not to predict every malicious file; it is to avoid turning an unverified message into code or active content on a device you care about.",{"title":234,"searchDepth":235,"depth":235,"links":1754},[1755,1756,1757,1758,1759,1760,1761,1762],{"id":1628,"depth":235,"text":1629},{"id":1646,"depth":235,"text":1647},{"id":1665,"depth":235,"text":1666},{"id":1688,"depth":235,"text":1689},{"id":1702,"depth":235,"text":1703},{"id":1715,"depth":235,"text":1716},{"id":1732,"depth":235,"text":1733},{"id":1745,"depth":235,"text":1746},{"originalAnalysis":1764,"trendContext":1765,"practicalValue":1766},"The checklist uses successive decision gates—expected request, independent sender check, filename, type and handling environment—rather than trusting one scanner result.","Malicious file formats and platform defences continue to change, while unexpected context, misleading extensions and active content remain durable warning signals.","Readers can stop before download, verify a request through a trusted channel and choose a safer environment without mistaking metadata for proof of safety.","Check the request, sender, file name, type and handling environment before downloading an attachment—and know what email previews and scanners cannot prove.",{"src":1769},"\u002Fimages\u002Fblog\u002Fattachment-safety-checklist-cover.webp",{},"\u002Fblog\u002Fattachment-safety-checklist",[1773,263],"inspect-email-links-tracking-pixels",[1775],"attachment-budget","Once Email security review",{"title":1611,"description":1767},"3.blog\u002F15.attachment-safety-checklist",[1780],"attachments","yAmq3MpkA4fni3p4DTIDPT068W_PDcKZBdaIqaUOWfc",{"id":1783,"title":1784,"audience":1785,"authors":1786,"badge":1789,"body":1791,"category":1171,"contentQuality":2005,"date":1593,"description":2009,"extension":253,"featured":254,"image":2010,"indexable":257,"locale":258,"meta":2012,"navigation":257,"path":2013,"relatedPosts":2014,"relatedTools":2017,"reviewedBy":885,"seo":2018,"stem":2019,"topics":2020,"updated":1593,"userTask":2008,"verifiedAt":1593,"__hash__":2021},"posts\u002F3.blog\u002F16.privacy-first-email-decision-tree.md","A Privacy-First Decision Tree for Email Sign-Ups",[7],[1787],{"name":11,"to":12,"avatar":1788},{"src":14},{"label":1790},"Privacy decisions",{"type":18,"value":1792,"toc":1995},[1793,1796,1799,1803,1808,1822,1829,1832,1836,1841,1854,1862,1865,1869,1874,1886,1889,1892,1896,1901,1913,1916,1920,1925,1937,1940,1946,1950,1953,1962,1965,1969,1975,1978,1982,1985,1992],[21,1794,1795],{},"Privacy at sign-up is not simply “share an address” or “hide an address.” The useful question is how much continuity the relationship needs and what happens if future mail becomes unavailable. A short-lived inbox can reduce exposure of a primary address, while a permanent account or durable alias can protect recovery, receipts and security notices.",[21,1797,1798],{},"This decision tree helps choose between three options: a permanent mailbox, a forwarding alias backed by a mailbox you control, and a receive-only temporary inbox such as Once Email. It does not override a website's terms, prove anonymity or make messages and attachments safe.",[37,1800,1802],{"id":1801},"start-with-the-websites-policy","Start with the website's policy",[21,1804,1805],{},[75,1806,1807],{},"Does the website permit the address type you want to use?",[200,1809,1810,1816],{},[68,1811,1812,1815],{},[75,1813,1814],{},"No or unclear:"," read the terms or ask support. Do not rotate domains, alter the address or repeatedly register to bypass a restriction.",[68,1817,1818,1821],{},[75,1819,1820],{},"Yes:"," continue to the recovery question.",[21,1823,1824,1825,1828],{},"A website may reject temporary addresses because it expects a stable recovery channel or is controlling repeated registrations. The ",[28,1826,1827],{"href":1329},"guide to disposable-address restrictions"," explains those reasons and legitimate alternatives.",[21,1830,1831],{},"Leaving the sign-up is also a valid privacy decision. If a low-value service demands a lasting identifier you do not want to provide, you do not have to exchange that data for access.",[37,1833,1835],{"id":1834},"question-1-will-email-be-needed-for-account-recovery","Question 1: Will email be needed for account recovery?",[21,1837,1838],{},[75,1839,1840],{},"Could losing this address prevent a password reset, account notification or ownership check?",[200,1842,1843,1848],{},[68,1844,1845,1847],{},[75,1846,1820],{}," use a permanent mailbox or a durable alias that forwards to one. Protect that mailbox with a unique password, appropriate multi-factor authentication and maintained recovery options.",[68,1849,1850,1853],{},[75,1851,1852],{},"No:"," continue to the payment and records question.",[21,1855,446,1856,1861],{},[28,1857,1860],{"href":1858,"rel":1859},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002Fsp800-63b\u002Fevents\u002F#account-recovery",[51],"NIST SP 800-63B account recovery guidance"," treats recovery as a managed lifecycle event and allows providers to use recovery addresses as part of that process. A short-lived inbox is a poor foundation when email is the route back into an important account.",[21,1863,1864],{},"Do not confuse a forwarding alias with a separate temporary inbox. An alias can preserve future delivery while keeping the primary address out of the website's database. Its exact reply, deletion and disclosure behaviour depends on the alias provider.",[37,1866,1868],{"id":1867},"question-2-are-money-ownership-or-required-records-involved","Question 2: Are money, ownership or required records involved?",[21,1870,1871],{},[75,1872,1873],{},"Will the service send invoices, tax records, purchase confirmations, subscription changes, licence notices or proof of ownership?",[200,1875,1876,1881],{},[68,1877,1878,1880],{},[75,1879,1820],{}," use a permanent address or durable alias, then retain required records outside the mailbox according to your needs.",[68,1882,1883,1885],{},[75,1884,1852],{}," continue to the conversation question.",[21,1887,1888],{},"A temporary inbox can expire before a refund, renewal warning or dispute. Saving the first receipt does not guarantee that later account notices will reach you. Use a durable address for banking, government, healthcare, employment, education records, paid services, domain registration and other relationships where continuity matters.",[21,1890,1891],{},"Privacy and record keeping are compatible. A per-service alias can limit unnecessary reuse of the primary address while still delivering long-term mail.",[37,1893,1895],{"id":1894},"question-3-must-you-reply-or-maintain-a-conversation","Question 3: Must you reply or maintain a conversation?",[21,1897,1898],{},[75,1899,1900],{},"Will you need to answer support, confirm a change by replying, negotiate with a person or continue a thread?",[200,1902,1903,1908],{},[68,1904,1905,1907],{},[75,1906,1820],{}," choose an address and provider that support sending and replies. Once Email is not suitable because it receives mail only.",[68,1909,1910,1912],{},[75,1911,1852],{}," continue to the lifetime question.",[21,1914,1915],{},"Some confirmation flows appear one-way but later require a reply. Check the service process before choosing a receive-only inbox. If a human relationship is likely to continue, use a mailbox whose sending identity and retention behaviour you understand.",[37,1917,1919],{"id":1918},"question-4-is-the-message-genuinely-short-lived-and-low-risk","Question 4: Is the message genuinely short-lived and low-risk?",[21,1921,1922],{},[75,1923,1924],{},"Do you need only one or two incoming messages for an authorised test, preview or low-risk interaction, with no later recovery or record requirement?",[200,1926,1927,1932],{},[68,1928,1929,1931],{},[75,1930,1820],{}," a temporary receive-only inbox may fit, if the website allows it.",[68,1933,1934,1936],{},[75,1935,1852],{}," use a durable alias or permanent mailbox.",[21,1938,1939],{},"Before proceeding, make the loss test explicit: “If this address disappeared immediately after the expected message, what would I lose?” If the answer includes an account, payment, legal record, personal relationship or security notification, the interaction is not truly temporary.",[21,1941,1942,1943,1945],{},"Check the ",[28,1944,1116],{"href":1115}," and select enough time for the authorised task. Do not assume that copying the address or bookmarking the page reserves it indefinitely.",[37,1947,1949],{"id":1948},"question-5-what-privacy-problem-are-you-actually-reducing","Question 5: What privacy problem are you actually reducing?",[21,1951,1952],{},"Address separation can reduce reuse of a primary identifier, keep low-value mail out of a long-term inbox and make it easier to identify which organisation received a specific alias. It does not conceal the browser's IP address, device signals, cookies, payment identity, information entered in a form or the contents of the received message.",[21,1954,1955,1956,1961],{},"Ask which data the service collects and why. NIST's ",[28,1957,1960],{"href":1958,"rel":1959},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002Fsp800-63a\u002Fial-general\u002F#general-privacy-requirements",[51],"privacy requirements for identity proofing"," emphasise limiting personal information to what is necessary and providing notice about purpose and retention. Those requirements target identity providers, but the user-level habit is useful: provide data deliberately, not automatically, and read the service's privacy information when the relationship matters.",[21,1963,1964],{},"If the website already knows your identity through payment, employment, government records or a signed-in identity provider, a temporary email address does not reverse that linkage.",[37,1966,1968],{"id":1967},"the-compact-decision-tree","The compact decision tree",[767,1970,1973],{"className":1971,"code":1972,"language":772,"meta":234},[770],"Does the site allow this address type?\n├─ No or unclear → Read the policy, ask support, or leave.\n└─ Yes\n   ├─ Needed for recovery, money, ownership, records or replies?\n   │  ├─ Yes → Permanent mailbox or durable forwarding alias.\n   │  └─ No\n   │     ├─ Only short-lived, low-risk incoming mail?\n   │     │  ├─ Yes → Temporary receive-only inbox may fit.\n   │     │  └─ No → Durable alias or permanent mailbox.\n   │     └─ Recheck lifetime before submitting.\n   └─ In every case → Protect credentials and inspect messages safely.\n",[95,1974,1972],{"__ignoreMap":234},[21,1976,1977],{},"This is a consequence tree, not a ranking. A permanent address is not automatically safer from spam, an alias is not automatically anonymous and a temporary inbox is not automatically private.",[37,1979,1981],{"id":1980},"apply-controls-after-choosing-the-address","Apply controls after choosing the address",[21,1983,1984],{},"Use a unique password for any account and enable an appropriate second factor. Keep recovery codes securely where relevant. Verify unexpected messages through a known channel, and do not open a link or attachment merely because it reached the chosen address.",[21,1986,1987,1988,1991],{},"For separation with continuity, learn how ",[28,1989,1990],{"href":1180},"aliases differ from temporary and permanent addresses",". For a short-lived inbox, never use it as the only recovery route for something you cannot afford to lose.",[21,1993,1994],{},"The privacy-first choice is the least persistent address that still supports the real relationship. Reducing unnecessary exposure is useful only when it does not quietly destroy recovery, records or the ability to communicate.",{"title":234,"searchDepth":235,"depth":235,"links":1996},[1997,1998,1999,2000,2001,2002,2003,2004],{"id":1801,"depth":235,"text":1802},{"id":1834,"depth":235,"text":1835},{"id":1867,"depth":235,"text":1868},{"id":1894,"depth":235,"text":1895},{"id":1918,"depth":235,"text":1919},{"id":1948,"depth":235,"text":1949},{"id":1967,"depth":235,"text":1968},{"id":1980,"depth":235,"text":1981},{"originalAnalysis":2006,"trendContext":2007,"practicalValue":2008},"The decision tree converts recovery, payment, record, reply and policy consequences into an address choice instead of treating privacy as a single toggle.","Identity and recovery options continue to diversify, but future access, contractual records and a website’s stated rules still determine whether an address is suitable.","Readers can walk through one sign-up before submitting it and select a permanent mailbox, forwarding alias or temporary receive-only inbox with clear reasons.","Choose between a permanent address, forwarding alias and temporary receive-only inbox by checking recovery, payments, records, replies and website policy.",{"src":2011},"\u002Fimages\u002Fblog\u002Fprivacy-first-email-decision-tree-cover.webp",{},"\u002Fblog\u002Fprivacy-first-email-decision-tree",[2015,2016],"who","email-address-types",[],{"title":1784,"description":2009},"3.blog\u002F16.privacy-first-email-decision-tree",[386],"IugPJUXo_8wQO7W09ZocH_Hrrp50fpbBUUbRTPHLmCQ",{"id":2023,"title":2024,"audience":2025,"authors":2026,"badge":2029,"body":2031,"category":2324,"contentQuality":2325,"date":1593,"description":2329,"extension":253,"featured":257,"image":2330,"indexable":257,"locale":258,"meta":2332,"navigation":257,"path":2333,"relatedPosts":2334,"relatedTools":2336,"reviewedBy":2337,"seo":2338,"stem":2339,"topics":2340,"updated":1593,"userTask":2328,"verifiedAt":1593,"__hash__":2342},"posts\u002F3.blog\u002F17.temporary-email-threat-model.md","Temporary Email Threat Model: What It Protects and What It Does Not",[8,1193],[2027],{"name":11,"to":12,"avatar":2028},{"src":14},{"label":2030},"Threat modelling",{"type":18,"value":2032,"toc":2312},[2033,2036,2039,2043,2046,2069,2072,2076,2079,2108,2111,2115,2118,2125,2134,2138,2141,2152,2156,2159,2162,2166,2169,2178,2182,2185,2191,2195,2198,2204,2208,2302,2306,2309],[21,2034,2035],{},"A threat model states what you care about, who or what might harm it, where the trust boundaries are and which controls reduce the risk. Without that structure, “use a temporary email for privacy” can become an unsafe promise. A receive-only temporary inbox separates one address from a permanent mailbox, but it does not make a person anonymous, validate a sender or neutralise malicious content.",[21,2037,2038],{},"This model describes the ordinary use of Once Email. It is not a penetration-testing plan and does not authorise activity against another website. Once Email receives mail, does not send replies and should be used only where the destination service permits temporary addresses.",[37,2040,2042],{"id":2041},"define-the-assets","Define the assets",[21,2044,2045],{},"The assets are more than the email address:",[200,2047,2048,2051,2054,2057,2060,2063,2066],{},[68,2049,2050],{},"control of the website account associated with the address;",[68,2052,2053],{},"verification codes, reset links and other secrets in received messages;",[68,2055,2056],{},"personal data and message content;",[68,2058,2059],{},"receipts, licences and records that may be needed later;",[68,2061,2062],{},"the permanent email address you may be trying not to disclose;",[68,2064,2065],{},"the device, browser session and network used to access the inbox;",[68,2067,2068],{},"trust in the sender and the integrity of downloaded files.",[21,2070,2071],{},"Different uses value different assets. An authorised developer testing a staging verification flow mainly needs isolation and reproducible delivery evidence. A customer buying a yearly subscription needs recovery, records and durable notifications. The same temporary inbox can be appropriate for the first and harmful for the second.",[37,2073,2075],{"id":2074},"identify-plausible-threat-actors-and-failures","Identify plausible threat actors and failures",[21,2077,2078],{},"Not every threat is a sophisticated attacker. Relevant scenarios include:",[200,2080,2081,2084,2087,2090,2093,2096,2102,2105],{},[68,2082,2083],{},"a website or data broker correlating the submitted address with cookies, network data, payment or form fields;",[68,2085,2086],{},"a sender delivering phishing content, tracking resources or a malicious attachment;",[68,2088,2089],{},"another person learning or guessing an inbox address and viewing messages if the service does not provide strong access control;",[68,2091,2092],{},"a compromised sender account producing correctly authenticated but harmful mail;",[68,2094,2095],{},"the temporary address expiring before recovery or an important notification;",[68,2097,2098,2099,2101],{},"the user exposing a verification code, reset link or ",[95,2100,743],{}," file in a screenshot or issue tracker;",[68,2103,2104],{},"a website rejecting temporary domains or suspending an account under its published rules;",[68,2106,2107],{},"operator logs, legal obligations or technical telemetry retaining more context than the user assumed.",[21,2109,2110],{},"A useful model includes accidental loss and policy conflict, not only hostile intrusion.",[37,2112,2114],{"id":2113},"protection-1-separating-the-submitted-address","Protection 1: separating the submitted address",[21,2116,2117],{},"A temporary address can prevent a low-value website from receiving the permanent mailbox address. If that site's contact database is later leaked or used for unwanted mail, the exposed identifier is the temporary address rather than the primary one.",[21,2119,2120,2121,2124],{},"This is ",[75,2122,2123],{},"address isolation",", not identity anonymity. The website may still associate the session with an IP address, cookies, browser storage, device characteristics, account name, phone number, payment instrument or activity pattern. The email provider may also process operational data needed to deliver the service.",[21,2126,2127,2128,2133],{},"NIST's ",[28,2129,2132],{"href":2130,"rel":2131},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002Fsp800-63.html#introduction",[51],"Digital Identity Guidelines introduction"," distinguishes an online digital identity from certainty about the person's real-life identity and recognises that identity systems create their own privacy risks. For a user, the practical conclusion is to state the desired separation precisely rather than claiming that one changed field hides every other identifier.",[37,2135,2137],{"id":2136},"protection-2-keeping-short-lived-mail-out-of-a-permanent-inbox","Protection 2: keeping short-lived mail out of a permanent inbox",[21,2139,2140],{},"Using a separate inbox can reduce clutter and prevent remote images in a message from loading inside a long-term mail client. Once Email displays received HTML through a protected preview that blocks scripts, forms and remote images by default. Its link checker can extract destinations without rendering the original HTML.",[21,2142,2143,2144,2147,2148,2151],{},"These controls reduce exposure; they do not prove the message is benign. A visible sender name can be forged, an authenticated domain can be malicious or compromised, and a user can still choose to visit a dangerous destination or download a harmful file. Follow the ",[28,2145,2146],{"href":1771},"attachment safety checklist"," and ",[28,2149,2150],{"href":260},"link inspection guide"," before acting.",[37,2153,2155],{"id":2154},"limit-1-mailbox-secrecy-and-shared-secrets","Limit 1: mailbox secrecy and shared secrets",[21,2157,2158],{},"An email verification code or reset link is a bearer secret: anyone who obtains it may be able to perform the action until it expires or is used. Treat the inbox address, access token and message contents according to the service's actual access model. Do not post an inbox URL, QR code, screenshot or raw message where another person can use it.",[21,2160,2161],{},"A temporary inbox is not an appropriate place for highly sensitive records or the only recovery path to an important account. Expiry can remove your access; address reuse or weak access assumptions can create risk depending on provider design. Once Email's lifetime options are convenience controls, not ownership guarantees.",[37,2163,2165],{"id":2164},"limit-2-network-and-browser-tracking","Limit 2: network and browser tracking",[21,2167,2168],{},"Changing the email address does not change the network connection used to visit the website. It also does not automatically clear cookies, local storage, URL parameters or analytics identifiers. If the sign-up form includes a real name, shipping address or payment, those values can directly identify or link the transaction.",[21,2170,2171,2172,2177],{},"Do not promise or assume “no tracking.” Review the website's consent and privacy controls, share only necessary information and use browser protections appropriate to your own risk. NIST's ",[28,2173,2176],{"href":2174,"rel":2175},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002Fsp800-63b\u002Fprivacy\u002F",[51],"privacy considerations"," recommend assessing both the likelihood and impact of privacy problems rather than treating consent as a substitute for risk control.",[37,2179,2181],{"id":2180},"limit-3-account-recovery-and-continuity","Limit 3: account recovery and continuity",[21,2183,2184],{},"The strongest privacy separation is not useful if it causes permanent account loss. When a site sends future security notices or recovery codes to an expired address, the user may be unable to respond. The provider may reasonably refuse manual recovery without sufficient evidence.",[21,2186,1539,2187,2190],{},[28,2188,2189],{"href":2013},"privacy-first sign-up decision tree"," before registering. Permanent mailboxes and durable aliases are generally better for money, ownership, identity-linked services, recurring subscriptions, records and ongoing conversations.",[37,2192,2194],{"id":2193},"limit-4-website-policy-and-abuse-controls","Limit 4: website policy and abuse controls",[21,2196,2197],{},"A temporary inbox does not grant permission to create repeated accounts, collect multiple promotions, evade enforcement or test an unauthorised target. A site can reject the domain, limit the account or require a durable contact method. Respect those rules; do not treat detection as a technical challenge.",[21,2199,2200,2201,2203],{},"For authorised product testing, define the allowed environment, test accounts and request rate before sending messages. The ",[28,2202,861],{"href":632}," keeps delivery tests reproducible without weakening another system's controls.",[37,2205,2207],{"id":2206},"controls-mapped-to-threats","Controls mapped to threats",[942,2209,2210,2223],{},[945,2211,2212],{},[948,2213,2214,2217,2220],{},[951,2215,2216],{},"Threat or failure",[951,2218,2219],{},"Useful control",[951,2221,2222],{},"Remaining limitation",[964,2224,2225,2236,2247,2258,2269,2280,2291],{},[948,2226,2227,2230,2233],{},[969,2228,2229],{},"Primary address appears in a low-value site's database",[969,2231,2232],{},"Use a permitted temporary inbox or per-service alias",[969,2234,2235],{},"Other identifiers may still link the session",[948,2237,2238,2241,2244],{},[969,2239,2240],{},"Unwanted future mail",[969,2242,2243],{},"Let the temporary inbox expire or disable an alias",[969,2245,2246],{},"Existing copies and provider records may remain",[948,2248,2249,2252,2255],{},[969,2250,2251],{},"Phishing link or tracking resource",[969,2253,2254],{},"Protected preview and local link inspection",[969,2256,2257],{},"User can still visit or disclose data to the destination",[948,2259,2260,2263,2266],{},[969,2261,2262],{},"Malicious attachment",[969,2264,2265],{},"Verify independently, patch software, scan and isolate as appropriate",[969,2267,2268],{},"No scanner guarantees safety; confidential files need careful handling",[948,2270,2271,2274,2277],{},[969,2272,2273],{},"Stolen verification secret",[969,2275,2276],{},"Keep inbox access and evidence private; use codes once",[969,2278,2279],{},"Email itself may be an insufficient high-assurance channel",[948,2281,2282,2285,2288],{},[969,2283,2284],{},"Account loss after expiry",[969,2286,2287],{},"Use a durable recovery address and saved recovery methods",[969,2289,2290],{},"Recovery still depends on the service's policy",[948,2292,2293,2296,2299],{},[969,2294,2295],{},"Website blocks temporary addresses",[969,2297,2298],{},"Use an allowed durable address or decline sign-up",[969,2300,2301],{},"There is no legitimate bypass entitlement",[37,2303,2305],{"id":2304},"state-the-models-conclusion-accurately","State the model's conclusion accurately",[21,2307,2308],{},"For an allowed, low-risk and short-lived receiving task, a temporary inbox can reduce disclosure of a permanent address and isolate disposable mail. It does not hide all identifiers, guarantee exclusive mailbox access, preserve long-term recovery, authenticate the author, scan every attachment or make links safe.",[21,2310,2311],{},"Revisit the model when the transaction changes. A test that becomes a production account, a free preview that becomes a paid subscription or a one-time download that becomes an ongoing support relationship needs a new address decision. Privacy is not the shortest lifetime by default; it is informed control over what is disclosed without sacrificing assets you still need.",{"title":234,"searchDepth":235,"depth":235,"links":2313},[2314,2315,2316,2317,2318,2319,2320,2321,2322,2323],{"id":2041,"depth":235,"text":2042},{"id":2074,"depth":235,"text":2075},{"id":2113,"depth":235,"text":2114},{"id":2136,"depth":235,"text":2137},{"id":2154,"depth":235,"text":2155},{"id":2164,"depth":235,"text":2165},{"id":2180,"depth":235,"text":2181},{"id":2193,"depth":235,"text":2194},{"id":2206,"depth":235,"text":2207},{"id":2304,"depth":235,"text":2305},"lifecycle-risk",{"originalAnalysis":2326,"trendContext":2327,"practicalValue":2328},"We model assets, actors, trust boundaries, controls and residual risks so address separation is evaluated as one control rather than advertised as anonymity.","Browser privacy protections and identity signals evolve, yet websites and infrastructure still observe technical data and message content still carries its own risks.","Readers can decide which threat a temporary inbox actually reduces, identify uncovered assets and add stronger controls when consequences are meaningful.","Model the assets, adversaries, protections and limits of a receive-only temporary inbox without confusing address separation with anonymity or message safety.",{"src":2331},"\u002Fimages\u002Fblog\u002Ftemporary-email-threat-model-cover.webp",{},"\u002Fblog\u002Ftemporary-email-threat-model",[2335],"readbook",[],"Once Email security and privacy review",{"title":2024,"description":2329},"3.blog\u002F17.temporary-email-threat-model",[2341,386],"threat-model","dwe9ENH7zoot1gbt2a8rFWUlw6DfN-dTxg2LWT7Ir3Y",{"id":2344,"title":2345,"audience":2346,"authors":2347,"badge":2350,"body":2352,"category":246,"contentQuality":2694,"date":2698,"description":2699,"extension":253,"featured":257,"image":2700,"indexable":257,"locale":258,"meta":2702,"navigation":257,"path":2718,"relatedPosts":2719,"relatedTools":2720,"reviewedBy":2337,"seo":2722,"stem":2723,"topics":2724,"updated":2703,"userTask":2697,"verifiedAt":2703,"__hash__":2726},"posts\u002F3.blog\u002F18.email-verification-code-safety.md","Email Verification Codes: A Safer Way to Copy, Check and Use Them",[7],[2348],{"name":11,"to":12,"avatar":2349},{"src":14},{"label":2351},"Verification safety",{"type":18,"value":2353,"toc":2683},[2354,2357,2364,2367,2371,2374,2377,2380,2383,2387,2390,2416,2419,2434,2437,2441,2444,2452,2455,2472,2475,2479,2482,2485,2488,2492,2495,2498,2501,2505,2508,2558,2561,2572,2576,2579,2608,2623,2627,2630,2662,2665,2669],[21,2355,2356],{},"The code arrived at 09:14. The page asking for it was still open, the sender name looked familiar, and the six digits were easy to spot. This is the moment when most advice becomes too abstract. A verification code is useful precisely because it is easy to transfer, yet that convenience also makes it easy to hand to the wrong page, paste into a chat, or leave on a shared clipboard.",[21,2358,2359,2360,2363],{},"A safer routine is short: ",[75,2361,2362],{},"pause, match, copy, use and clear",". It takes less time than recovering an account after a mistaken paste.",[21,2365,2366],{},"This guide is about codes delivered by email for address confirmation, sign-in, recovery or a sensitive change. These messages do not all have the same security meaning. NIST explicitly distinguishes codes used to validate an email address from authentication processes, and it does not treat manually entered codes as phishing-resistant. That distinction matters: extracting a code accurately does not prove that the page requesting it is legitimate.",[37,2368,2370],{"id":2369},"pause-did-you-start-this-request","Pause: did you start this request?",[21,2372,2373],{},"The first check happens before reading the digits. Ask what action caused the message.",[21,2375,2376],{},"If you just opened an account, requested a password reset or confirmed a change, the timing makes sense. If no action comes to mind, do not “test” the code on a page supplied by the message. Someone may have mistyped your address, or another person may be attempting to access an account connected to it.",[21,2378,2379],{},"An unexpected code is a signal, not an instruction. Leave it unused, open the relevant service through a saved bookmark or an address you already know, and inspect recent account activity there. Never send the code to a person claiming to be support. A legitimate support conversation should not require you to disclose a live verification secret.",[21,2381,2382],{},"Repeated unexpected codes deserve a little more attention. Check the security of the durable mailbox involved, review recovery options and change a reused password. Do not assume the code itself means the mailbox has been breached; it can also mean an attacker knows an address and is failing at the next step.",[37,2384,2386],{"id":2385},"match-connect-the-message-to-the-correct-transaction","Match: connect the message to the correct transaction",[21,2388,2389],{},"Before copying, compare four details:",[65,2391,2392,2398,2404,2410],{},[68,2393,2394,2397],{},[75,2395,2396],{},"Service:"," Is this the organisation and product you were using?",[68,2399,2400,2403],{},[75,2401,2402],{},"Action:"," Does the message describe sign-in, address confirmation, recovery or the exact change you requested?",[68,2405,2406,2409],{},[75,2407,2408],{},"Time:"," Did it arrive immediately after that action rather than hours later?",[68,2411,2412,2415],{},[75,2413,2414],{},"Destination:"," Is the open page on the expected registered domain, using HTTPS, with no surprising subdomain or spelling?",[21,2417,2418],{},"The destination check is the one people skip. A six-digit code can be relayed by a phishing page to the real service while it is still valid. NIST describes manually entered authenticator outputs as not phishing-resistant because the output is not cryptographically bound to the intended session. In ordinary language: a correct code does not know which page you meant to trust.",[21,2420,2421,2422,2424,2425,2427,2428,2430,2431,2433],{},"Read the hostname from right to left. In ",[95,2423,118],{},", the registered site is ",[95,2426,122],{},"; in ",[95,2429,126],{},", it is ",[95,2432,129],{},". Decorative logos, familiar colours and a sender display name do not change that.",[21,2435,2436],{},"When consequences are high—money, work access, health records or primary account recovery—prefer a phishing-resistant option such as a passkey when the service offers one. Email codes can still be useful for address confirmation and recovery, but they should not be mistaken for the strongest available sign-in method.",[37,2438,2440],{"id":2439},"copy-move-only-the-code","Copy: move only the code",[21,2442,2443],{},"Once the transaction matches, copy the smallest useful value. Do not select the surrounding sentence, sender address, reset link or account details. A clean six-character clipboard entry reduces accidental disclosure and prevents invisible formatting from breaking the form.",[21,2445,2446,2447,2451],{},"Once Email's ",[28,2448,2450],{"href":2449},"\u002Ftools\u002Femail-code-extractor","verification code extractor"," works locally in the browser. Paste the message text or HTML, review the candidates and copy the code you recognise. The tool does not send the pasted message to a processing API, and it does not decide whether the sender or destination is trustworthy.",[21,2453,2454],{},"Automatic extraction is deliberately conservative, but ambiguity remains possible:",[200,2456,2457,2460,2463,2466,2469],{},[68,2458,2459],{},"an order number can look like a verification code;",[68,2461,2462],{},"a footer may contain a short telephone extension;",[68,2464,2465],{},"an older quoted message may contain an expired code;",[68,2467,2468],{},"some services use letters as well as digits;",[68,2470,2471],{},"a message can contain both a transaction reference and a one-time secret.",[21,2473,2474],{},"Match the candidate against the nearby wording and the form's expected length. If the page asks for eight characters and the extractor highlights a six-digit order number, stop rather than trimming or guessing.",[37,2476,2478],{"id":2477},"use-paste-into-the-page-you-already-checked","Use: paste into the page you already checked",[21,2480,2481],{},"Return to the page that initiated the request. Do not follow a new “verify now” link merely because it appears beside the code. Paste once, submit once, and read the result.",[21,2483,2484],{},"If the code is rejected, check the most recent message and the destination before requesting another. Rapidly generating codes can make the sequence confusing because many services invalidate an earlier code when a replacement is issued. OWASP recommends short validity, single use, attempt limits and invalidation after successful verification. Those are controls the service must implement; a user should still avoid creating a pile of indistinguishable messages.",[21,2486,2487],{},"Do not keep retrying variations. Failed-attempt limits are meant to resist guessing, and repeated submissions may lock the flow. If the expected code does not work, restart from the service's known page rather than asking an unknown person for help or sharing a screenshot.",[37,2489,2491],{"id":2490},"clear-finish-the-small-security-task","Clear: finish the small security task",[21,2493,2494],{},"After a successful submission, replace the clipboard contents with something non-sensitive if you are on a shared or managed device. Close the verification page and the message preview. If the message contains no record you need, let it expire with the temporary inbox or remove it from a durable mailbox according to your own retention needs.",[21,2496,2497],{},"Clipboard cleanup is not a magic eraser. Clipboard managers, device synchronisation, remote-desktop software and managed-device tooling may retain copied data according to their settings. The practical goal is to avoid leaving a live code ready for the next accidental paste.",[21,2499,2500],{},"Also check where you may have exposed the message while troubleshooting. Screenshots, screen recordings, issue tickets and chat threads often outlive the code. Even after expiry, they can reveal an address, account name, service relationship or recovery workflow.",[37,2502,2504],{"id":2503},"a-code-extractor-is-a-convenience-tool-not-a-trust-engine","A code extractor is a convenience tool, not a trust engine",[21,2506,2507],{},"There are three separate questions:",[942,2509,2510,2523],{},[945,2511,2512],{},[948,2513,2514,2517,2520],{},[951,2515,2516],{},"Question",[951,2518,2519],{},"What helps",[951,2521,2522],{},"What does not answer it",[964,2524,2525,2536,2547],{},[948,2526,2527,2530,2533],{},[969,2528,2529],{},"Which short string looks like the code?",[969,2531,2532],{},"Local extraction and nearby message text",[969,2534,2535],{},"Sender authenticity",[948,2537,2538,2541,2544],{},[969,2539,2540],{},"Did I request this transaction?",[969,2542,2543],{},"Your own recent action and account activity",[969,2545,2546],{},"A polished email design",[948,2548,2549,2552,2555],{},[969,2550,2551],{},"Is this the correct page?",[969,2553,2554],{},"The registered domain and a known navigation path",[969,2556,2557],{},"A correct code or familiar logo",[21,2559,2560],{},"Keeping those questions separate prevents a common reasoning error: “the tool found a code, therefore the message is real.” Extraction improves transcription. It does not authenticate the sender, inspect account history or bind the code to a website.",[21,2562,2563,2564,2568,2569,2571],{},"For suspicious HTML, use the ",[28,2565,2567],{"href":2566},"\u002Ftools\u002Femail-preview","protected email preview"," without loading remote content. To inspect a destination without opening it from the message, extract it with the ",[28,2570,541],{"href":30}," and compare the registered domain.",[37,2573,2575],{"id":2574},"developer-checklist-make-the-safer-path-the-easy-path","Developer checklist: make the safer path the easy path",[21,2577,2578],{},"Teams building verification flows should not leave all of the burden to the user. A sound implementation should:",[200,2580,2581,2584,2587,2590,2593,2596,2599,2602,2605],{},[68,2582,2583],{},"keep codes short-lived and single-use;",[68,2585,2586],{},"rate-limit failed attempts without resetting the failure count whenever a new code is requested;",[68,2588,2589],{},"invalidate the code after successful use;",[68,2591,2592],{},"avoid logging or retaining plaintext codes;",[68,2594,2595],{},"state the requested action and approximate time in the message;",[68,2597,2598],{},"avoid placing unrelated numbers close to the code;",[68,2600,2601],{},"support password managers and platform code-autofill semantics where appropriate;",[68,2603,2604],{},"offer a stronger phishing-resistant authenticator for important sign-in paths;",[68,2606,2607],{},"make cancellation and security reporting easy when a request was not initiated by the recipient.",[21,2609,2610,2611,2616,2617,2622],{},"OWASP's ",[28,2612,2615],{"href":2613,"rel":2614},"https:\u002F\u002Fcheatsheetseries.owasp.org\u002Fcheatsheets\u002FMultifactor_Authentication_Cheat_Sheet.html#one-time-password-otp-handling-and-storage",[51],"multifactor authentication guidance"," covers code lifetime, single use, attempt limits and storage. NIST's ",[28,2618,2621],{"href":2619,"rel":2620},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002Fsp800-63b.html#authenticators",[51],"authenticator requirements"," explain why email validation codes and authentication secrets need different claims, and why manually transferred codes are not phishing-resistant.",[37,2624,2626],{"id":2625},"the-20-second-routine","The 20-second routine",[21,2628,2629],{},"When the next message arrives:",[65,2631,2632,2638,2644,2650,2656],{},[68,2633,2634,2637],{},[75,2635,2636],{},"Pause:"," confirm that you initiated the request.",[68,2639,2640,2643],{},[75,2641,2642],{},"Match:"," compare the service, action, time and registered domain.",[68,2645,2646,2649],{},[75,2647,2648],{},"Copy:"," take only the code, using local extraction if it helps.",[68,2651,2652,2655],{},[75,2653,2654],{},"Use:"," paste it into the page you already verified.",[68,2657,2658,2661],{},[75,2659,2660],{},"Clear:"," remove the live secret from the clipboard and close the task.",[21,2663,2664],{},"The point is not to turn a six-digit code into a ceremony. It is to add two checks that copying cannot perform: whether the request is yours and whether the destination is real.",[37,2666,2668],{"id":2667},"the-30-second-go-or-stop-check","The 30-second go or stop check",[21,2670,2671,2672,2677,2678,2682],{},"Before copying, confirm: you requested this exact action; the destination belongs to the intended service; the temporary address is not the only recovery route for money, work, health or another account you cannot lose; nobody else can see the inbox, QR code, screenshot or clipboard; and you can use the newest matching code once, then clear it.\\n\\nA “no” or “not sure” means stop and enter through the service's known site or app. Correctly extracting six digits proves only what the message contains, not that the requesting page is legitimate. NIST's ",[28,2673,2676],{"href":2674,"rel":2675},"https:\u002F\u002Fpages.nist.gov\u002F800-63-4\u002Fsp800-63b.html",[51],"digital identity guidance"," and OWASP's ",[28,2679,2681],{"href":465,"rel":2680},[51],"forgot-password guidance"," support treating recovery and verification secrets as controlled, expiring lifecycle events.",{"title":234,"searchDepth":235,"depth":235,"links":2684},[2685,2686,2687,2688,2689,2690,2691,2692,2693],{"id":2369,"depth":235,"text":2370},{"id":2385,"depth":235,"text":2386},{"id":2439,"depth":235,"text":2440},{"id":2477,"depth":235,"text":2478},{"id":2490,"depth":235,"text":2491},{"id":2503,"depth":235,"text":2504},{"id":2574,"depth":235,"text":2575},{"id":2625,"depth":235,"text":2626},{"id":2667,"depth":235,"text":2668},{"originalAnalysis":2695,"trendContext":2696,"practicalValue":2697},"We separate address-confirmation mail from authentication, then follow one code from receipt to clipboard, destination check, submission and deliberate cleanup.","Passkeys are becoming more common, but email confirmation and recovery codes remain routine, while phishing still exploits codes that users manually transfer between pages.","Readers get a short decision routine for unexpected codes, look-alike domains, shared devices, clipboard exposure and the limits of automatic code extraction.","2026-08-08","Treat an email verification code as a short-lived secret: confirm the request, inspect the destination, copy only the code and clear it when the task is finished.",{"src":2701},"\u002Fimages\u002Fblog\u002Femail-verification-code-safety-cover.webp",{"reviewedAt":2703,"researchReview":2704,"primarySources":2710,"indexingReview":2711,"translationReview":2715},"2026-08-13",{"userValue":2705,"searchIntent":2706,"evidenceSummary":2707,"policyRisks":2708,"reviewDecision":2709},"Readers need a fast go or stop check before transferring a code; the existing URL gains a concrete decision tool instead of a synonym page.","Search Console showed this URL as crawled but not indexed on 2026-08-13, so the existing page is improved and measured rather than duplicated.","NIST distinguishes address validation from stronger authentication; OWASP treats reset secrets as controlled, expiring credentials with single-use safeguards.","Reviewed phishing relay, secret disclosure, account abuse, scaled duplication and unsafe claims; the revision forbids sharing codes or bypassing controls.","publish: improve the existing URL with an operational checklist and reviewed evidence, without a keyword or platform doorway page.",[2674,465],{"status":2712,"evidenceDate":2703,"action":2713,"rationale":2714},"crawled-not-indexed","improve","The crawled page already owns this task; stronger decision utility is preferable to another near-duplicate URL.",{"sourceLocale":258,"targetLocale":258,"factualParity":2716,"languageReview":2717},"The English source preserves facts, limits, sources, structure and index intent required across all localized versions.","Once Email engineering and security review checked the English terminology, claims, sources and action sequence.","\u002Fblog\u002Femail-verification-code-safety",[1773,262],[2721],"email-code-extractor",{"title":2345,"description":2699},"3.blog\u002F18.email-verification-code-safety",[2725],"verification-codes","3c4yLKEj22vdGNPWm2krIShqvgDQL8BaI7i8aVVUDpI",{"id":2728,"title":2729,"audience":2730,"authors":2731,"badge":2734,"body":2736,"category":623,"contentQuality":2905,"date":2698,"description":2909,"extension":253,"featured":257,"image":2910,"indexable":257,"locale":258,"meta":2911,"navigation":257,"path":2929,"relatedPosts":2930,"relatedTools":2931,"reviewedBy":2932,"seo":2933,"stem":2934,"topics":2935,"updated":2912,"userTask":2908,"verifiedAt":2912,"__hash__":2937},"posts\u002F3.blog\u002F19.temporary-email-api-testing-guide.md","How to Use a Temporary Email API Without Building Flaky Tests",[393],[2732],{"name":11,"to":12,"avatar":2733},{"src":14},{"label":2735},"API testing",{"type":18,"value":2737,"toc":2895},[2738,2741,2748,2755,2759,2762,2765,2769,2772,2775,2779,2782,2788,2803,2807,2810,2827,2830,2834,2837,2845,2849,2856,2859,2863,2866,2869,2873,2876,2889,2892],[21,2739,2740],{},"An email test can pass for the wrong reason. A shared inbox may contain yesterday's code, a fixed 10-second sleep may work on a quiet morning, and a retry loop without a deadline may keep a CI worker occupied long after the application has failed.",[21,2742,2743,2744,2747],{},"A reliable temporary-email API test is a small state machine: ",[75,2745,2746],{},"create, trigger, poll, match, assert and clean up",". Each stage needs a clear owner, a deadline and evidence that does not leak the message itself.",[21,2749,2750,2751,2754],{},"Before automating the flow, use the broader ",[28,2752,2753],{"href":632},"email testing checklist"," to decide which delivery, rendering and security behaviours belong in the test suite.",[37,2756,2758],{"id":2757},"give-every-test-run-its-own-inbox","Give every test run its own inbox",[21,2760,2761],{},"Create a new inbox for one test or one tightly related scenario. Do not let parallel workers read the same address. Record the returned inbox identifier in the test context, not just the address; subsequent requests should refer to that opaque identifier.",[21,2763,2764],{},"Create the inbox immediately before the action that sends mail. This narrows the time window and prevents an old message from satisfying a weak assertion. If a test runner can retry a failed job, include its run identifier in local diagnostic metadata rather than trying to choose a memorable email address.",[37,2766,2768],{"id":2767},"trigger-one-observable-action","Trigger one observable action",[21,2770,2771],{},"Ask the system under test to perform exactly one action: send a confirmation link, deliver a sign-in code or issue a receipt. Capture the application's request or event identifier when it provides one. That identifier is stronger evidence than a subject-line match alone.",[21,2773,2774],{},"Do not test an unsolicited third-party system. Automated inboxes are for applications you own or are authorised to assess. They are not a mechanism for account farming, bypassing a platform's controls or monitoring another person's correspondence.",[37,2776,2778],{"id":2777},"poll-with-a-deadline-and-backoff","Poll with a deadline and backoff",[21,2780,2781],{},"Mail delivery is asynchronous, so an immediate empty list is normal. Poll gently and stop decisively. A useful starting budget is a 60-second deadline with waits of 1, 2, 3, 5, 8 and then 10 seconds. Add a little random jitter when many workers start together.",[767,2783,2786],{"className":2784,"code":2785,"language":772,"meta":234},[770],"deadline = now + 60 seconds\ndelay = 1 second\nwhile now \u003C deadline:\n    messages = list_messages(inbox_id)\n    candidate = find_expected(messages)\n    if candidate exists: return candidate\n    sleep(delay + jitter)\n    delay = min(delay * 1.6, 10 seconds)\nfail(\"expected email did not arrive before deadline\")\n",[95,2787,2785],{"__ignoreMap":234},[21,2789,2790,2791,2794,2795,2798,2799,2802],{},"Respect ",[95,2792,2793],{},"429 Too Many Requests"," and any ",[95,2796,2797],{},"Retry-After"," value. Retrying more aggressively after a rate limit makes the test less likely to recover. Retry temporary ",[95,2800,2801],{},"5xx"," and network failures only within the original deadline; do not silently turn a one-minute test into a ten-minute test.",[37,2804,2806],{"id":2805},"match-the-transaction-not-only-the-subject","Match the transaction, not only the subject",[21,2808,2809],{},"Subject lines are written for people and can change. Prefer a combination of evidence:",[200,2811,2812,2815,2818,2821,2824],{},[68,2813,2814],{},"the message arrived after the action began;",[68,2816,2817],{},"the recipient is the inbox created for this run;",[68,2819,2820],{},"the sender domain is expected;",[68,2822,2823],{},"a correlation identifier or one-time link belongs to the test transaction;",[68,2825,2826],{},"there is exactly one candidate, or the test explicitly chooses the newest valid one.",[21,2828,2829],{},"Treat message HTML as untrusted input. Do not execute scripts, load remote images or open links in a normal browsing profile. Extract the target URL, parse it and assert its registered destination before a controlled test client follows it.",[37,2831,2833],{"id":2832},"keep-secrets-out-of-test-output","Keep secrets out of test output",[21,2835,2836],{},"An API key, verification code and magic link are credentials even when short-lived. Put API keys in the CI secret store and send them in an authorization header. Never place them in query strings, screenshots, fixture files or repository configuration.",[21,2838,2839,2840,2844],{},"On failure, log bounded metadata: inbox identifier suffix, timestamps, message count, redacted sender domain, HTTP status and request ID. Avoid dumping headers, bodies, attachments or complete addresses. A useful test report explains ",[2841,2842,2843],"em",{},"where"," the state machine stopped without becoming another mailbox archive.",[37,2846,2848],{"id":2847},"clean-up-in-a-finally-block","Clean up in a finally block",[21,2850,2851,2852,2855],{},"Deletion must run whether the assertion passes or fails. Put inbox cleanup in the test framework's ",[95,2853,2854],{},"finally",", teardown or after-each hook. Cleanup reduces accidental retention, keeps later tests isolated and makes quota usage easier to understand.",[21,2857,2858],{},"If deletion fails temporarily, report it separately from the product assertion. Do not hide the original failure. A scheduled server-side expiry remains valuable as a backstop, but it should not replace deliberate cleanup.",[37,2860,2862],{"id":2861},"plan-quotas-before-parallelising","Plan quotas before parallelising",[21,2864,2865],{},"Estimate calls per scenario: one inbox creation, several list requests, one detail request and one deletion. Ten workers polling every second can exhaust a shared limit without increasing delivery speed. Bound worker concurrency, share the documented rate budget across the test process and display monthly consumption in the account dashboard.",[21,2867,2868],{},"Once Email's planned Developer tier separates the free browser allowance from API automation. Its authentication, error, quota and pricing contracts will be published after live key handling, metering and subscription revocation pass production testing. This keeps product claims aligned with capabilities that users can actually verify.",[37,2870,2872],{"id":2871},"diagnose-the-stage-not-just-email-missing","Diagnose the stage, not just “email missing”",[21,2874,2875],{},"Before enabling a test in CI, define a small result contract. Record the stage, a bounded duration, HTTP status, provider request ID when one exists, candidate count and a non-secret run ID. Do not record the mailbox address, code, link, subject, body, attachment name, API key or full query string.",[21,2877,2878,2879,155,2882,2885,2886,2888],{},"Classify the outcome before retrying: a rejected trigger belongs to the application under test; delivery pending means no matching message arrived before the deadline; ",[95,2880,2881],{},"429",[95,2883,2884],{},"503"," must honour ",[95,2887,2797],{}," within the original time budget; multiple candidates mean ambiguous correlation; a matching message with a wrong controlled destination is an assertion failure; and cleanup failure must be reported separately without hiding the original result.",[21,2890,2891],{},"The preflight check is equally important: verify that the provider actually offers documented API access, authentication, deletion, expiry and rate-limit behaviour before writing the adapter. Once Email does not currently expose a public production API, so examples in this guide are provider-neutral design patterns, not callable Once Email endpoints.",[21,2893,2894],{},"The best email test is not the one that retries forever. It is the one that creates an isolated inbox, waits politely, proves that the right transaction arrived, records safe evidence and leaves no mailbox behind.",{"title":234,"searchDepth":235,"depth":235,"links":2896},[2897,2898,2899,2900,2901,2902,2903,2904],{"id":2757,"depth":235,"text":2758},{"id":2767,"depth":235,"text":2768},{"id":2777,"depth":235,"text":2778},{"id":2805,"depth":235,"text":2806},{"id":2832,"depth":235,"text":2833},{"id":2847,"depth":235,"text":2848},{"id":2861,"depth":235,"text":2862},{"id":2871,"depth":235,"text":2872},{"originalAnalysis":2906,"trendContext":2907,"practicalValue":2908},"We trace one automated signup test from inbox creation through bounded polling, message selection, assertion and cleanup, including failure evidence that is useful without retaining message bodies.","Email links and codes remain common in automated signup and recovery tests, while parallel CI jobs make shared inboxes, fixed sleeps, unlimited polling and message-body logging increasingly unreliable.","Readers get a provider-neutral workflow, executable pseudocode, a bounded retry budget, status-code policy, transaction matching criteria, safe logging fields and teardown guidance.","A practical design for temporary-email API tests: isolate each run, poll with backoff, identify the right message, protect secrets and always clean up.",{"src":2331},{"reviewedAt":2912,"researchReview":2913,"primarySources":2919,"indexingReview":2923,"translationReview":2926},"2026-08-14",{"userValue":2914,"searchIntent":2915,"evidenceSummary":2916,"policyRisks":2917,"reviewDecision":2918},"Developers need a failure contract that separates product, delivery, provider, quota and test-harness faults without retaining message content or inventing a live Once Email API.","Search Console confirmed the English URL is indexed while the Portuguese equivalent was crawled but not indexed; this batch improves the shared task rather than creating another API doorway page.","HTTP defines Retry-After for controlled follow-up requests, OWASP excludes credentials and direct identifiers from logs, and Playwright recommends isolated test state for reproducibility.","Reviewed secret leakage, unauthorised third-party testing, account farming, misleading public-API claims, unlimited polling, scaled duplicate content and unsafe log retention.","publish: add an operational failure matrix and preflight contract to the existing Top 10 URLs while stating that Once Email public API access is not yet available.",[2920,2921,2922],"https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc9110.html","https:\u002F\u002Fcheatsheetseries.owasp.org\u002Fcheatsheets\u002FLogging_Cheat_Sheet.html","https:\u002F\u002Fplaywright.dev\u002Fdocs\u002Fbest-practices",{"status":2924,"evidenceDate":2912,"action":2713,"rationale":2925},"indexed","The indexed English URL remains the canonical source; the change adds a substantive failure-diagnosis task needed to keep all localized equivalents factually aligned.",{"sourceLocale":258,"targetLocale":258,"factualParity":2927,"languageReview":2928},"The English source defines the common failure matrix, evidence boundary, API availability statement and index intent used by every localized version.","Once Email engineering and security review checked the English HTTP, CI, logging and abuse terminology.","\u002Fblog\u002Ftemporary-email-api-testing-guide",[882,634],[],"Once Email engineering and security review",{"title":2729,"description":2909},"3.blog\u002F19.temporary-email-api-testing-guide",[2936,640],"api","RfyxGb7IdvtHSKiJyuSnzKbutlhHNoUbVWufjWFTzVo",{"id":2939,"title":2940,"audience":2941,"authors":2942,"badge":2945,"body":2947,"category":1588,"contentQuality":3079,"date":3083,"description":3084,"extension":253,"featured":254,"image":3085,"indexable":257,"locale":258,"meta":3087,"navigation":257,"path":498,"relatedPosts":3088,"relatedTools":3090,"reviewedBy":266,"seo":3091,"stem":3092,"topics":3093,"updated":387,"userTask":3082,"verifiedAt":387,"__hash__":3094},"posts\u002F3.blog\u002F2.anxiety.md","Verification Email Not Arriving? A Safe Troubleshooting Checklist",[7],[2943],{"name":11,"to":12,"avatar":2944},{"src":14},{"label":2946},"Delivery troubleshooting",{"type":18,"value":2948,"toc":3071},[2949,2952,2955,2959,2965,2968,2971,2975,2992,2995,2998,3002,3005,3008,3011,3015,3018,3035,3038,3051,3055,3058,3061,3065,3068],[21,2950,2951],{},"A verification message can be delayed or missing for several different reasons. The address may have been entered incorrectly, the website may not have created the message yet, a sending server may be retrying a temporary failure, or the receiving service may have rejected the message.",[21,2953,2954],{},"The quickest response is not to press “resend” repeatedly. Use the checklist below to preserve the newest valid code and collect enough evidence to tell whether the problem is in the browser, the address, the sender or mail delivery.",[37,2956,2958],{"id":2957},"_1-confirm-the-exact-address-first","1. Confirm the exact address first",[21,2960,2961,2962,2964],{},"Compare the address shown by the website with the address in your inbox character by character. Check both sides of the ",[95,2963,1256],{}," sign. A missing letter, an extra space or an old temporary address is enough to send the message somewhere else or produce a permanent delivery failure.",[21,2966,2967],{},"If you refreshed Once Email, created a new address or opened another browser profile, make sure the website is not still sending to the earlier address. A receive-only inbox cannot retrieve a message that was addressed to a different mailbox.",[21,2969,2970],{},"Do not publish the full address, verification link or code in a support forum. A code is an authentication secret even when it expires quickly.",[37,2972,2974],{"id":2973},"_2-wait-before-requesting-one-controlled-resend","2. Wait before requesting one controlled resend",[21,2976,2977,2978,2981,2982,2985,2986,2991],{},"Transactional messages are often generated by a queue. A busy sender or receiving server may return a temporary condition and ask the sending system to try again later. SMTP enhanced status codes use a leading ",[95,2979,2980],{},"4"," for a persistent temporary failure and a leading ",[95,2983,2984],{},"5"," for a permanent failure; the exact handling still belongs to the sender and receiving systems. The ",[28,2987,2990],{"href":2988,"rel":2989},"https:\u002F\u002Fwww.rfc-editor.org\u002Finfo\u002Frfc5248\u002F",[51],"IETF SMTP status-code registry"," provides the standard framework.",[21,2993,2994],{},"Wait a few minutes and refresh the inbox. If the website offers a resend control, request one new message and note the time. Avoid creating a rapid series of codes: some websites invalidate every earlier code when a newer one is issued, while others apply rate limits.",[21,2996,2997],{},"When several messages eventually arrive, use only the newest code unless the website explicitly says otherwise.",[37,2999,3001],{"id":3000},"_3-check-whether-the-sender-actually-accepted-the-request","3. Check whether the sender actually accepted the request",[21,3003,3004],{},"Look at the website after submitting the form. A clear confirmation such as “message sent” is different from a validation error, a rate-limit warning or a request that never finishes.",[21,3006,3007],{},"If the page reports an invalid or unsupported email address, changing the inbox will not correct a policy decision made by that website. Use an address type the website permits. Do not try to evade its eligibility, identity or account-creation rules.",[21,3009,3010],{},"If the page is stuck, preserve the error text and time, then use the website's official support channel. Once Email can show messages it receives, but it cannot force another service to generate or resend a message.",[37,3012,3014],{"id":3013},"_4-separate-sender-problems-from-inbox-problems","4. Separate sender problems from inbox problems",[21,3016,3017],{},"Try to answer these questions:",[200,3019,3020,3023,3026,3029,3032],{},[68,3021,3022],{},"Did other messages reach the same inbox recently?",[68,3024,3025],{},"Does the sender show a service-status incident?",[68,3027,3028],{},"Did the sender display a typo, rejection or rate-limit error?",[68,3030,3031],{},"Did one delayed copy arrive after a controlled resend?",[68,3033,3034],{},"Is the message for a service that blocks temporary addresses?",[21,3036,3037],{},"A successful message from an unrelated sender proves only that the inbox can receive some mail. It does not prove that a specific sender created a message or that every intermediate server accepted it.",[21,3039,3040,3041,2147,3046,53],{},"Google's guidance for its own verification messages similarly starts with checking the entered address and spam or bulk folders. Its sender troubleshooting also distinguishes invalid addresses, temporary recipient problems and spam-related rejection. Those examples are useful categories, but they do not reveal the status of a message sent to Once Email. See ",[28,3042,3045],{"href":3043,"rel":3044},"https:\u002F\u002Fsupport.google.com\u002Faccounts\u002Fanswer\u002F63950?hl=en",[51],"Google Account verification help",[28,3047,3050],{"href":3048,"rel":3049},"https:\u002F\u002Fsupport.google.com\u002Fmail\u002Fanswer\u002F6596?hl=en",[51],"Gmail delivery troubleshooting",[37,3052,3054],{"id":3053},"_5-know-the-limits-of-a-temporary-inbox","5. Know the limits of a temporary inbox",[21,3056,3057],{},"Once Email is receive-only. It cannot reply to a sender, contact a support desk from the temporary address or provide a permanent recovery channel. Messages and addresses are intended to be short-lived, so do not use the inbox when losing access would lock you out of something important.",[21,3059,3060],{},"Use a permanent address for banking, healthcare, government services, purchases that may need support, subscriptions you intend to keep, and any account with long-term records or recovery needs. If a verification step starts as a trial but becomes important, change the account to a controlled long-term address while you still have access.",[37,3062,3064],{"id":3063},"a-concise-escalation-record","A concise escalation record",[21,3066,3067],{},"When contacting the sender, provide the request time, the destination domain, the visible error and whether a resend was attempted. Do not send the full verification URL, password or code. The sender may be able to inspect its queue or a delivery-status notification; the receiver cannot invent that evidence after the fact.",[21,3069,3070],{},"The useful sequence is simple: verify the address, wait, request one resend, read the sender's status, and choose a permanent mailbox when recovery matters. That process is safer and more informative than generating many addresses or codes at random.",{"title":234,"searchDepth":235,"depth":235,"links":3072},[3073,3074,3075,3076,3077,3078],{"id":2957,"depth":235,"text":2958},{"id":2973,"depth":235,"text":2974},{"id":3000,"depth":235,"text":3001},{"id":3013,"depth":235,"text":3014},{"id":3053,"depth":235,"text":3054},{"id":3063,"depth":235,"text":3064},{"originalAnalysis":3080,"trendContext":3081,"practicalValue":3082},"The checklist treats missing mail as a four-stage failure tree—request, sender queue, delivery and mailbox—rather than assuming the inbox is always at fault.","Short-lived codes, resend throttles and automated anti-abuse checks continue to tighten, making controlled retries and precise timestamps more useful than repeated requests.","Readers leave with an ordered diagnostic sequence that protects the newest valid code and produces evidence a sender or mailbox operator can actually investigate.","2025-04-26","Work through address mistakes, sender delays, retries, filtering and mailbox limits without repeatedly requesting codes or weakening account security.",{"src":3086},"\u002Fimages\u002Fblog\u002Fanxiety-cover.webp",{},[3089,1601],"read-received-headers",[],{"title":2940,"description":3084},"3.blog\u002F2.anxiety",[1337],"s0WKodmnkeNwHKEKub4UdXIw3FSJm_WtsKRohb1hSaw",{"id":3096,"title":3097,"audience":3098,"authors":3099,"badge":3102,"body":3104,"category":1171,"contentQuality":3269,"date":3273,"description":3274,"extension":253,"featured":254,"image":3275,"indexable":257,"locale":258,"meta":3277,"navigation":257,"path":588,"relatedPosts":3278,"relatedTools":3279,"reviewedBy":382,"seo":3280,"stem":3281,"topics":3282,"updated":387,"userTask":3272,"verifiedAt":387,"__hash__":3283},"posts\u002F3.blog\u002F3.difference.md","Temporary Email or Permanent Email: A Practical Decision Guide",[7],[3100],{"name":11,"to":12,"avatar":3101},{"src":14},{"label":3103},"Practical guide",{"type":18,"value":3105,"toc":3261},[3106,3109,3112,3116,3119,3190,3194,3197,3204,3208,3211,3214,3218,3221,3224,3228,3248,3254,3258],[21,3107,3108],{},"A permanent inbox and a temporary inbox solve different problems. The safest choice depends on how long you need the address, whether the account may need recovery, and how serious the consequences would be if the message disappeared.",[21,3110,3111],{},"Once Email provides a receive-only temporary address. It does not send, reply to or forward messages, and it should not be treated as a replacement for a permanent email account.",[37,3113,3115],{"id":3114},"the-short-decision-rule","The short decision rule",[21,3117,3118],{},"Use a permanent address when the relationship, record or account must continue. Consider a temporary address only when the message is short-lived, the activity is low-risk, and the website permits it.",[942,3120,3121,3134],{},[945,3122,3123],{},[948,3124,3125,3128,3131],{},[951,3126,3127],{},"Situation",[951,3129,3130],{},"Better starting choice",[951,3132,3133],{},"Reason",[964,3135,3136,3147,3157,3168,3179],{},[948,3137,3138,3141,3144],{},[969,3139,3140],{},"Banking, healthcare or government services",[969,3142,3143],{},"Permanent email",[969,3145,3146],{},"Records and recovery access may be needed later.",[948,3148,3149,3152,3154],{},[969,3150,3151],{},"Primary social, work or developer account",[969,3153,3143],{},[969,3155,3156],{},"Losing the address can prevent account recovery.",[948,3158,3159,3162,3165],{},[969,3160,3161],{},"Software email-flow testing",[969,3163,3164],{},"Temporary email",[969,3166,3167],{},"Test messages can be separated from a personal inbox.",[948,3169,3170,3173,3176],{},[969,3171,3172],{},"A low-risk one-time download or trial",[969,3174,3175],{},"Depends on the site's rules",[969,3177,3178],{},"A temporary address may reduce later marketing, but acceptance is not guaranteed.",[948,3180,3181,3184,3187],{},[969,3182,3183],{},"Sensitive or confidential documents",[969,3185,3186],{},"Permanent, appropriately secured email",[969,3188,3189],{},"A temporary inbox is not designed for durable or confidential records.",[37,3191,3193],{"id":3192},"what-a-temporary-address-changes","What a temporary address changes",[21,3195,3196],{},"A temporary address can reduce how often a long-term personal address is entered into unrelated forms. That may limit routine inbox clutter and separate test traffic from normal correspondence.",[21,3198,3199,3200,3203],{},"It does not make the activity anonymous. Websites, network providers and hosting infrastructure can still process technical information. It also does not prevent a sender from placing personal information inside the message. Read the ",[28,3201,3202],{"href":317},"Once Email Privacy Policy"," for the data handled by this service.",[37,3205,3207],{"id":3206},"what-can-go-wrong","What can go wrong",[21,3209,3210],{},"Temporary addresses and messages expire. A third-party website may reject a temporary domain, and Once Email cannot override that decision. If an account later requires a code sent to the original address, recovery may be impossible after expiration.",[21,3212,3213],{},"For that reason, never use a temporary inbox for an account, purchase, contract or record that matters beyond the displayed mailbox lifetime. Save neither secrets nor irreplaceable files in a disposable inbox.",[37,3215,3217],{"id":3216},"follow-the-other-websites-rules","Follow the other website's rules",[21,3219,3220],{},"A temporary inbox is not a tool for creating deceptive identities, evading bans, claiming the same promotion repeatedly, bypassing account limits or avoiding required verification. If a service prohibits disposable addresses, use an accepted address or do not create the account.",[21,3222,3223],{},"Software teams should use temporary mailboxes only in environments and workflows they are authorised to test. Test accounts should not affect real customers, production data or another organisation's systems.",[37,3225,3227],{"id":3226},"a-safer-workflow","A safer workflow",[65,3229,3230,3233,3236,3239,3242,3245],{},[68,3231,3232],{},"Decide whether you will need account recovery or a durable record.",[68,3234,3235],{},"Read the website's terms before choosing an address type.",[68,3237,3238],{},"Use a permanent, well-protected inbox for important relationships.",[68,3240,3241],{},"Use a temporary inbox only for low-risk, short-lived receiving tasks.",[68,3243,3244],{},"Treat unexpected links and attachments cautiously regardless of the inbox type.",[68,3246,3247],{},"Delete the temporary address when the task is complete.",[21,3249,3250,3251,3253],{},"Once Email's browser-local ",[28,3252,541],{"href":30}," can identify common redirect and remote-loading clues without opening pasted links. A clean result is not proof that a destination is safe.",[37,3255,3257],{"id":3256},"bottom-line","Bottom line",[21,3259,3260],{},"Temporary email is a narrow privacy and testing convenience. Permanent email is the appropriate default for identity, recovery, records and ongoing communication. Choosing between them is a risk decision, not a contest over which technology is universally better.",{"title":234,"searchDepth":235,"depth":235,"links":3262},[3263,3264,3265,3266,3267,3268],{"id":3114,"depth":235,"text":3115},{"id":3192,"depth":235,"text":3193},{"id":3206,"depth":235,"text":3207},{"id":3216,"depth":235,"text":3217},{"id":3226,"depth":235,"text":3227},{"id":3256,"depth":235,"text":3257},{"originalAnalysis":3270,"trendContext":3271,"practicalValue":3272},"We compare inbox types by the consequence of losing access, not by broad privacy slogans, and separate short-lived convenience from account continuity.","Aliases and privacy-focused address services are becoming more common, but recovery notices, billing records and website address policies still create durable obligations.","The decision table lets readers match software tests, subscriptions, purchases and sensitive records to an address type without overestimating temporary email.","2025-04-27","Choose the right inbox for software testing, low-risk sign-ups, account recovery and sensitive records without treating temporary email as an anonymity or security guarantee.",{"src":3276},"\u002Fimages\u002Fblog\u002Fdifference-cover.webp",{},[2015,2016],[],{"title":3097,"description":3274},"3.blog\u002F3.difference",[386],"25ksYDd6htRmc3lJancEXHTxAYbIuGa98yTCk0B5r80",{"id":3285,"title":3286,"audience":3287,"authors":3288,"badge":3291,"body":3293,"category":1171,"contentQuality":3456,"date":3460,"description":3461,"extension":253,"featured":254,"image":3462,"indexable":257,"locale":258,"meta":3464,"navigation":257,"path":3465,"relatedPosts":3466,"relatedTools":3467,"reviewedBy":382,"seo":3468,"stem":3469,"topics":3470,"updated":387,"userTask":3459,"verifiedAt":387,"__hash__":3471},"posts\u002F3.blog\u002F4.who.md","When Is a Temporary Email Address Safe to Use?",[7],[3289],{"name":11,"to":12,"avatar":3290},{"src":14},{"label":3292},"Safe-use checklist",{"type":18,"value":3294,"toc":3444},[3295,3298,3301,3305,3308,3311,3331,3334,3338,3343,3346,3349,3353,3356,3360,3363,3369,3373,3376,3396,3399,3403,3406,3409,3426,3434,3438,3441],[21,3296,3297],{},"A temporary address is useful when an email has a short purpose and little lasting value. It becomes a poor choice when the address controls account recovery, contains sensitive records or must remain available after the current browser session.",[21,3299,3300],{},"Once Email creates a temporary, receive-only inbox. It does not send, reply to or forward messages. It also does not make a website, message, link or attachment trustworthy. Use this checklist before deciding which kind of address to provide.",[37,3302,3304],{"id":3303},"start-with-consequence-not-convenience","Start with consequence, not convenience",[21,3306,3307],{},"Ask what happens if the address or message is unavailable tomorrow. If the answer includes lost money, lost work, missed medical information, an unrecoverable account or an inability to contact support, use a permanent address that you control.",[21,3309,3310],{},"A temporary inbox is a reasonable starting point only when all of these statements are true:",[200,3312,3313,3316,3319,3322,3325,3328],{},[68,3314,3315],{},"the website permits temporary addresses;",[68,3317,3318],{},"the activity is lawful and authorised;",[68,3320,3321],{},"the message is needed briefly;",[68,3323,3324],{},"no sensitive personal or financial record is expected;",[68,3326,3327],{},"no reply or long-term recovery is required;",[68,3329,3330],{},"losing the message would have a small, reversible consequence.",[21,3332,3333],{},"Privacy is not the same as anonymity. The website, network providers, email sender and receiving infrastructure may still process technical data. A temporary address mainly helps separate one short-lived interaction from a primary inbox.",[37,3335,3337],{"id":3336},"good-low-risk-examples","Good low-risk examples",[3339,3340,3342],"h3",{"id":3341},"testing-software-you-are-authorised-to-test","Testing software you are authorised to test",[21,3344,3345],{},"A developer or tester may need to observe a confirmation message from a staging system or verify that an authorised test flow produces the expected email. Use synthetic data and a dedicated test environment when possible. Do not use temporary addresses to create deceptive users, evade rate limits or test systems without permission.",[21,3347,3348],{},"Record only the evidence needed for the test. Verification codes, reset links and message headers can contain secrets or identifiers, so remove them from screenshots and bug reports.",[3339,3350,3352],{"id":3351},"trying-a-low-risk-newsletter-or-download","Trying a low-risk newsletter or download",[21,3354,3355],{},"A temporary inbox can separate a one-time resource or newsletter sample from a primary mailbox when the publisher allows it and no purchase history or continuing access is involved. Review the website's terms and privacy notice first. If you later depend on the service, move to a permanent address before the temporary inbox disappears.",[3339,3357,3359],{"id":3358},"inspecting-a-message-in-a-disposable-environment","Inspecting a message in a disposable environment",[21,3361,3362],{},"Receiving an unfamiliar message away from a primary inbox can reduce clutter, but it does not make the content safe. Do not click an unexpected link or download an attachment merely because it arrived in a temporary mailbox.",[21,3364,3365,3366,53],{},"The US Federal Trade Commission advises people not to click links or open attachments in unexpected messages and to contact a company through a website or number already known to be genuine. See the FTC's ",[28,3367,52],{"href":49,"rel":3368},[51],[37,3370,3372],{"id":3371},"cases-that-need-a-permanent-address","Cases that need a permanent address",[21,3374,3375],{},"Use a controlled, long-term mailbox for:",[200,3377,3378,3381,3384,3387,3390,3393],{},[68,3379,3380],{},"banking, payments, tax, insurance, healthcare or government services;",[68,3382,3383],{},"employment, education records or important client work;",[68,3385,3386],{},"purchases, warranties, bookings and subscriptions that may need support;",[68,3388,3389],{},"password resets, multi-factor recovery and security alerts;",[68,3391,3392],{},"accounts holding personal data, saved work, reputation or money;",[68,3394,3395],{},"any relationship that may require a reply.",[21,3397,3398],{},"A receive-only address is especially unsuitable when support expects you to answer from the registered mailbox. It is also unsuitable where the provider prohibits disposable addresses. Respecting that policy is part of safe use, even if the initial task feels low-risk.",[37,3400,3402],{"id":3401},"check-the-message-before-acting","Check the message before acting",[21,3404,3405],{},"Treat the visible sender name as a label, not proof. Email display names and From addresses can be forged. Authentication results such as SPF, DKIM and DMARC provide useful domain-level evidence, but a passing result still does not prove that a link, attachment or request is safe.",[21,3407,3408],{},"Before using a verification link:",[65,3410,3411,3414,3417,3420,3423],{},[68,3412,3413],{},"Confirm that you initiated the request.",[68,3415,3416],{},"Compare the claimed service with the site you actually visited.",[68,3418,3419],{},"Inspect the destination without opening suspicious links.",[68,3421,3422],{},"Never provide a password, payment detail or recovery secret in response to an unexpected message.",[68,3424,3425],{},"Open the known official website directly when the message creates urgency or asks for sensitive action.",[21,3427,2446,3428,3430,3431,3433],{},[28,3429,541],{"href":30}," can extract links and tracking-pixel clues from pasted HTML locally in the browser. It does not visit the links, scan malware or certify safety. The ",[28,3432,751],{"href":750}," similarly explains supplied header evidence without performing live DNS or reputation checks.",[37,3435,3437],{"id":3436},"a-repeatable-decision-rule","A repeatable decision rule",[21,3439,3440],{},"Use a temporary address for a permitted, short-lived and reversible task. Use a permanent address when identity, recovery, records, payment, support or an ongoing relationship matters. Regardless of the inbox type, verify unexpected messages through a trusted channel and keep authentication secrets private.",[21,3442,3443],{},"That boundary is more useful than describing temporary email as universally safe or unsafe. The right choice depends on the consequence of losing access and the rules of the service you are using.",{"title":234,"searchDepth":235,"depth":235,"links":3445},[3446,3447,3453,3454,3455],{"id":3303,"depth":235,"text":3304},{"id":3336,"depth":235,"text":3337,"children":3448},[3449,3451,3452],{"id":3341,"depth":3450,"text":3342},3,{"id":3351,"depth":3450,"text":3352},{"id":3358,"depth":3450,"text":3359},{"id":3371,"depth":235,"text":3372},{"id":3401,"depth":235,"text":3402},{"id":3436,"depth":235,"text":3437},{"originalAnalysis":3457,"trendContext":3458,"practicalValue":3459},"The article starts from loss scenarios—money, work, health records and recovery—then derives a safe-use checklist instead of declaring whole categories universally safe.","More services use email for verification and security alerts, so an address chosen for a one-time message can unexpectedly become a long-term identity dependency.","Readers can classify a proposed use by consequence, policy and lifespan, and can recognise the point at which convenience should yield to continuity.","2025-05-01","A risk-based checklist for software tests, short-lived downloads, newsletters, account recovery and sensitive services using a receive-only temporary inbox.",{"src":3463},"\u002Fimages\u002Fblog\u002Fwho-cover.webp",{},"\u002Fblog\u002Fwho",[1182,1183],[],{"title":3286,"description":3461},"3.blog\u002F4.who",[386],"a_Uc4XiSC0GBKF30CVNU8WwqiZJuVQy0a4u0DUPqXbI",{"id":3473,"title":3474,"audience":3475,"authors":3476,"badge":3479,"body":3481,"category":2324,"contentQuality":3645,"date":3649,"description":3650,"extension":253,"featured":254,"image":3651,"indexable":257,"locale":258,"meta":3653,"navigation":257,"path":1115,"relatedPosts":3654,"relatedTools":3656,"reviewedBy":3657,"seo":3658,"stem":3659,"topics":3660,"updated":387,"userTask":3648,"verifiedAt":387,"__hash__":3663},"posts\u002F3.blog\u002F5.readbook.md","How Long Does a Temporary Email Last? Plan Before It Expires",[7],[3477],{"name":11,"to":12,"avatar":3478},{"src":14},{"label":3480},"Mailbox lifetime",{"type":18,"value":3482,"toc":3637},[3483,3486,3489,3492,3496,3499,3502,3513,3516,3520,3523,3526,3543,3546,3550,3553,3561,3564,3568,3571,3574,3594,3597,3601,3604,3624,3627,3631,3634],[21,3484,3485],{},"A temporary inbox is designed to disappear. That is useful when a message has a short purpose, but it creates a serious risk if the address later becomes the only way to recover an account, retrieve a receipt or contact support.",[21,3487,3488],{},"Once Email currently displays one-hour and one-day lifetime choices. Mailbox data is scheduled for deletion within the selected lifetime, with one day as the longest lifetime shown by the service. You can replace or delete the address sooner. An expired or deleted address and its messages cannot be restored.",[21,3490,3491],{},"This is a product limit, not a promise that every message will remain available for every second of the selected period. Delivery delays, browser state, maintenance and sender-side problems can still affect what you see. Treat every useful message as temporary from the moment it arrives.",[37,3493,3495],{"id":3494},"what-the-countdown-means","What the countdown means",[21,3497,3498],{},"The selected lifetime controls how long the temporary mailbox is intended to remain available. It is not the validity period of a verification code or link. The sender decides how long its code, invitation or reset link remains valid, and that period may be shorter than the mailbox countdown.",[21,3500,3501],{},"Three different clocks may therefore be running:",[200,3503,3504,3507,3510],{},[68,3505,3506],{},"the Once Email mailbox lifetime;",[68,3508,3509],{},"the sender's message or code validity period;",[68,3511,3512],{},"the lifetime of the account or transaction created with the address.",[21,3514,3515],{},"A message can remain visible after its code has expired. The reverse can also happen: a code may still be valid in theory after the temporary mailbox is no longer available. Do not assume these clocks are coordinated.",[37,3517,3519],{"id":3518},"what-replacement-and-deletion-change","What replacement and deletion change",[21,3521,3522],{},"Replacing an address creates a different temporary mailbox. Deleting an address ends access to the current mailbox. Neither action migrates messages, forwards future mail or creates a recovery path.",[21,3524,3525],{},"Before selecting either action, check whether you still need:",[200,3527,3528,3531,3534,3537,3540],{},[68,3529,3530],{},"a verification code that has not been entered;",[68,3532,3533],{},"an order reference or support identifier;",[68,3535,3536],{},"an attachment you are authorised to retain;",[68,3538,3539],{},"the sender's official domain or contact instructions;",[68,3541,3542],{},"evidence for an authorised software test.",[21,3544,3545],{},"Save only what you genuinely need and are allowed to keep. Verification links, reset links, session tokens and one-time codes are secrets. Do not place them in public screenshots, shared issue trackers or analytics systems.",[37,3547,3549],{"id":3548},"why-temporary-email-is-poor-account-recovery","Why temporary email is poor account recovery",[21,3551,3552],{},"Account recovery depends on a channel that remains under your control. A temporary address is deliberately short-lived, so it is a poor recovery address even when an initial sign-up succeeds.",[21,3554,3555,3556,3560],{},"Current ",[28,3557,3559],{"href":2674,"rel":3558},[51],"NIST digital identity guidance"," treats account recovery as a distinct process involving recovery codes, recovery contacts or repeated identity proofing. It also describes notifications and multiple contact methods as important protections. Once Email does not provide those long-term identity and recovery functions.",[21,3562,3563],{},"Use a permanent address for any account involving money, personal records, saved work, purchases, employment, education, healthcare, government services or an ongoing subscription. Also use one whenever support may require a reply from the registered address: Once Email is receive-only and cannot send, reply or forward.",[37,3565,3567],{"id":3566},"move-important-accounts-while-access-still-works","Move important accounts while access still works",[21,3569,3570],{},"Sometimes a low-risk trial becomes valuable. If the service permits changing the registered address, move it to a permanent mailbox while you can still sign in. Confirm the new address before deleting or replacing the temporary inbox.",[21,3572,3573],{},"A practical migration sequence is:",[65,3575,3576,3579,3582,3585,3588,3591],{},[68,3577,3578],{},"Sign in through the service's known official site.",[68,3580,3581],{},"Add a permanent address you control.",[68,3583,3584],{},"Complete the service's confirmation process.",[68,3586,3587],{},"Add another recovery method or save recovery codes if offered.",[68,3589,3590],{},"Verify that security notifications reach the new destination.",[68,3592,3593],{},"Only then remove dependence on the temporary address.",[21,3595,3596],{},"Do not use an email link from an unexpected message to start this change. Open the known service directly, especially when the message creates urgency or asks for credentials.",[37,3598,3600],{"id":3599},"a-checklist-before-the-mailbox-expires","A checklist before the mailbox expires",[21,3602,3603],{},"Ask these questions while time remains:",[200,3605,3606,3609,3612,3615,3618,3621],{},[68,3607,3608],{},"Have I completed the one short-lived task for which I created the address?",[68,3610,3611],{},"Does any resulting account need future access or support?",[68,3613,3614],{},"Have I moved an important account to a permanent recovery address?",[68,3616,3617],{},"Have I recorded a non-secret reference that I am authorised to keep?",[68,3619,3620],{},"Have I removed codes and links from screenshots or test reports?",[68,3622,3623],{},"Am I ready for the address and messages to become unrecoverable?",[21,3625,3626],{},"If any answer is uncertain, do not build more activity on the temporary address. Finish the authorised task or move to a durable mailbox.",[37,3628,3630],{"id":3629},"the-safe-rule","The safe rule",[21,3632,3633],{},"Choose a temporary inbox only when the task is permitted, short-lived and reversible. Assume the address will not be available later. If the relationship, record or account must survive, start with—or promptly move to—a permanent address that supports recovery and replies.",[21,3635,3636],{},"Expiration is not a defect to work around; it is the defining boundary of the product. Planning for that boundary prevents a convenient one-time inbox from becoming an avoidable lockout.",{"title":234,"searchDepth":235,"depth":235,"links":3638},[3639,3640,3641,3642,3643,3644],{"id":3494,"depth":235,"text":3495},{"id":3518,"depth":235,"text":3519},{"id":3548,"depth":235,"text":3549},{"id":3566,"depth":235,"text":3567},{"id":3599,"depth":235,"text":3600},{"id":3629,"depth":235,"text":3630},{"originalAnalysis":3646,"trendContext":3647,"practicalValue":3648},"We separate three clocks that users often confuse: mailbox lifetime, message retention and the sender-defined validity period of a code or link.","Passwordless and magic-link flows make expiry more visible, but providers still set independent validity windows that do not follow a temporary mailbox countdown.","Readers can plan what to save, when to migrate recovery information and why a displayed lifetime should never be treated as a storage guarantee.","2025-05-06","Understand Once Email lifetime choices, deletion and replacement, then decide what to save and when an account needs a permanent recovery address.",{"src":3652},"\u002Fimages\u002Fblog\u002Freadbook-cover.webp",{},[3655],"temporary-email-threat-model",[],"Once Email product review",{"title":3474,"description":3650},"3.blog\u002F5.readbook",[3661,3662],"expiry","recovery","RGKfcXXwm--97zbJygZm-zYyRkezFDOOfFpk5gAugoQ",{"id":4,"title":5,"audience":3665,"authors":3666,"badge":3669,"body":3670,"category":246,"contentQuality":3805,"date":251,"description":252,"extension":253,"featured":254,"image":3806,"indexable":257,"locale":258,"meta":3807,"navigation":257,"path":260,"relatedPosts":3808,"relatedTools":3809,"reviewedBy":266,"seo":3810,"stem":268,"topics":3811,"updated":271,"userTask":250,"verifiedAt":271,"__hash__":272},[7,8],[3667],{"name":11,"to":12,"avatar":3668},{"src":14},{"label":16},{"type":18,"value":3671,"toc":3794},[3672,3674,3678,3680,3682,3684,3689,3691,3693,3695,3707,3709,3711,3717,3719,3721,3723,3735,3737,3739,3749,3751,3753,3755,3760,3762,3764,3766,3768,3770,3772,3786,3788,3790,3792],[21,3673,23],{},[21,3675,26,3676,32],{},[28,3677,31],{"href":30},[21,3679,35],{},[37,3681,40],{"id":39},[21,3683,43],{},[21,3685,46,3686,53],{},[28,3687,52],{"href":49,"rel":3688},[51],[37,3690,57],{"id":56},[21,3692,60],{},[21,3694,63],{},[65,3696,3697,3699,3703,3705],{},[68,3698,70],{},[68,3700,73,3701,53],{},[75,3702,77],{},[68,3704,80],{},[68,3706,83],{},[21,3708,86],{},[37,3710,90],{"id":89},[21,3712,93,3713,98,3715,102],{},[95,3714,97],{},[95,3716,101],{},[21,3718,105],{},[37,3720,109],{"id":108},[21,3722,112],{},[21,3724,115,3725,119,3727,123,3729,119,3731,130,3733,134],{},[95,3726,118],{},[95,3728,122],{},[95,3730,126],{},[95,3732,129],{},[95,3734,133],{},[21,3736,137],{},[37,3738,141],{"id":140},[21,3740,144,3741,148,3743,148,3745,155,3747,159],{},[95,3742,147],{},[95,3744,151],{},[95,3746,154],{},[95,3748,158],{},[21,3750,162],{},[37,3752,166],{"id":165},[21,3754,169],{},[21,3756,172,3757,178],{},[28,3758,177],{"href":175,"rel":3759},[51],[21,3761,181],{},[37,3763,185],{"id":184},[21,3765,188],{},[21,3767,191],{},[37,3769,195],{"id":194},[21,3771,198],{},[200,3773,3774,3776,3778,3780,3782,3784],{},[68,3775,204],{},[68,3777,207],{},[68,3779,210],{},[68,3781,213],{},[68,3783,216],{},[68,3785,219],{},[21,3787,222],{},[37,3789,226],{"id":225},[21,3791,229],{},[21,3793,232],{},{"title":234,"searchDepth":235,"depth":235,"links":3795},[3796,3797,3798,3799,3800,3801,3802,3803,3804],{"id":39,"depth":235,"text":40},{"id":56,"depth":235,"text":57},{"id":89,"depth":235,"text":90},{"id":108,"depth":235,"text":109},{"id":140,"depth":235,"text":141},{"id":165,"depth":235,"text":166},{"id":184,"depth":235,"text":185},{"id":194,"depth":235,"text":195},{"id":225,"depth":235,"text":226},{"originalAnalysis":248,"trendContext":249,"practicalValue":250},{"src":256},{},[262,263],[265],{"title":5,"description":252},[270],{"id":3813,"title":3814,"audience":3815,"authors":3816,"badge":3819,"body":3821,"category":1588,"contentQuality":3985,"date":3989,"description":3990,"extension":253,"featured":254,"image":3991,"indexable":257,"locale":258,"meta":3993,"navigation":257,"path":1542,"relatedPosts":3994,"relatedTools":3995,"reviewedBy":266,"seo":3996,"stem":3997,"topics":3998,"updated":271,"userTask":3988,"verifiedAt":271,"__hash__":3999},"posts\u002F3.blog\u002F7.corecomponent.md","How to Read SPF, DKIM and DMARC Results in an Email Header",[393,8],[3817],{"name":11,"to":12,"avatar":3818},{"src":14},{"label":3820},"Email authentication",{"type":18,"value":3822,"toc":3975},[3823,3826,3832,3836,3854,3857,3860,3864,3867,3870,3874,3877,3886,3890,3893,3902,3905,3909,3912,3918,3921,3945,3948,3952,3955,3962,3965,3969,3972],[21,3824,3825],{},"Email headers often contain SPF, DKIM and DMARC results. These mechanisms provide evidence about the domains and systems involved in delivery. They do not inspect every kind of deception and do not prove that a message, sender or link is safe.",[21,3827,3828,3829,3831],{},"This guide explains the result summary produced by the Once Email ",[28,3830,751],{"href":750},". The analyser reads pasted text locally in the browser. It performs no DNS, reputation, malware or live policy lookup.",[37,3833,3835],{"id":3834},"spf-was-this-system-authorised-for-an-envelope-domain","SPF: was this system authorised for an envelope domain?",[21,3837,3838,3839,148,3842,148,3845,148,3848,155,3851,53],{},"Sender Policy Framework lets a domain publish which systems are authorised to send using an SPF identity. A receiving system compares the connecting sender with that published policy and records a result such as ",[95,3840,3841],{},"pass",[95,3843,3844],{},"fail",[95,3846,3847],{},"softfail",[95,3849,3850],{},"neutral",[95,3852,3853],{},"none",[21,3855,3856],{},"SPF is not simply a check of the address a person sees in the visible From field. DMARC uses the SPF result for the SMTP MAIL FROM identity and then evaluates whether its domain aligns with the visible author domain.",[21,3858,3859],{},"Forwarding can complicate SPF because the forwarding server becomes the system connecting to the final receiver. A failed SPF result therefore needs context; it is not by itself a complete verdict about the message.",[37,3861,3863],{"id":3862},"dkim-did-a-signed-part-of-the-message-validate","DKIM: did a signed part of the message validate?",[21,3865,3866],{},"DomainKeys Identified Mail adds a cryptographic signature associated with a signing domain. A receiver retrieves the public key from DNS and checks whether the signed header fields and body still validate.",[21,3868,3869],{},"A DKIM pass is evidence that the signed material validated for the signing domain. It does not establish that the display name is honest, that every visible element was signed, or that a linked website is safe. Mailing systems can also legitimately modify messages in ways that break a signature.",[37,3871,3873],{"id":3872},"dmarc-does-authenticated-identity-align-with-the-visible-author-domain","DMARC: does authenticated identity align with the visible author domain?",[21,3875,3876],{},"DMARC builds on SPF and DKIM. It compares an authenticated SPF or DKIM domain with the domain in the visible From address and applies the domain owner's published policy and receiver policy.",[21,3878,3879,3880,3885],{},"The current IETF specification, ",[28,3881,3884],{"href":3882,"rel":3883},"https:\u002F\u002Fwww.rfc-editor.org\u002Finfo\u002Frfc9989\u002F",[51],"RFC 9989",", explains that DMARC authenticates domain-level identifiers and does not address display-name attacks or analyse message content. It replaced the older RFC 7489 in May 2026.",[3339,3887,3889],{"id":3888},"what-changed-in-the-2026-dmarc-revision","What changed in the 2026 DMARC revision",[21,3891,3892],{},"RFC 9989 is not evidence that every message system suddenly changed behaviour in 2026. It consolidates the current protocol definition, explicitly obsoletes RFC 7489 and RFC 9091, and separates aggregate and failure-report formats into companion specifications. The practical reading rule remains stable: a DMARC pass means an aligned SPF or DKIM identity authorised use of the visible author domain. It is not a reputation score, an identity check on the person who wrote the message or a scan of links and attachments.",[21,3894,3895,3896,3901],{},"This distinction matters when interpreting “new DMARC requirements” in product announcements. A provider may change its delivery policy or bulk-sender requirements independently of the base protocol. For example, Gmail's ",[28,3897,3900],{"href":3898,"rel":3899},"https:\u002F\u002Fsupport.google.com\u002Fmail\u002Fanswer\u002F81126?hl=en",[51],"sender guidelines"," apply different authentication requirements by sending volume. Treat provider policy, protocol validation and message safety as three separate layers.",[21,3903,3904],{},"A DMARC pass means at least one supported authentication path passed with the required alignment. It does not mean the author is personally verified, the account has not been compromised, or the message is harmless.",[37,3906,3908],{"id":3907},"reading-authentication-results","Reading Authentication-Results",[21,3910,3911],{},"A simplified header might look like this:",[767,3913,3916],{"className":3914,"code":3915,"language":772,"meta":234},[770],"Authentication-Results: mx.example;\n  spf=pass smtp.mailfrom=mailer.example;\n  dkim=pass header.d=mailer.example;\n  dmarc=pass header.from=mailer.example\n",[95,3917,3915],{"__ignoreMap":234},[21,3919,3920],{},"Review these values together:",[65,3922,3923,3930,3933,3936,3939,3942],{},[68,3924,3925,3926,3929],{},"Which server wrote the ",[95,3927,3928],{},"Authentication-Results"," field?",[68,3931,3932],{},"Which domain passed SPF?",[68,3934,3935],{},"Which domain signed with DKIM?",[68,3937,3938],{},"Which domain appears in the visible From address?",[68,3940,3941],{},"Does DMARC report alignment, failure or no policy?",[68,3943,3944],{},"Does the delivery route make sense for the sender you expected?",[21,3946,3947],{},"Headers can contain several result fields because multiple systems processed the message. The newest trusted receiver's result is often the most relevant, but deciding which intermediary is trusted requires knowledge of the mailbox provider and delivery path.",[37,3949,3951],{"id":3950},"why-a-pass-is-not-a-safety-guarantee","Why a pass is not a safety guarantee",[21,3953,3954],{},"An attacker can authenticate a domain they control. A legitimate sender's account can be compromised. A correctly authenticated message can still contain a misleading request, malicious attachment or dangerous link.",[21,3956,446,3957,3961],{},[28,3958,3960],{"href":3898,"rel":3959},[51],"Gmail sender guidelines"," require different authentication controls depending on sending volume and describe authentication as a deliverability and anti-abuse measure. They do not turn authentication into a general content-safety verdict.",[21,3963,3964],{},"If a message asks for credentials, money, urgent action or sensitive files, verify the request through a known contact channel. Do not rely on the From name or a green authentication result alone.",[37,3966,3968],{"id":3967},"use-the-analyser-conservatively","Use the analyser conservatively",[21,3970,3971],{},"Paste header fields only, not the message body or attachments. Compare the analyser's summary with the context in which the message arrived. Treat missing, malformed or conflicting evidence as a reason for additional verification, not as automatic proof of fraud.",[21,3973,3974],{},"For incident response, domain configuration or high-impact decisions, use your mailbox provider's original message view and consult a qualified email administrator or security professional.",{"title":234,"searchDepth":235,"depth":235,"links":3976},[3977,3978,3979,3982,3983,3984],{"id":3834,"depth":235,"text":3835},{"id":3862,"depth":235,"text":3863},{"id":3872,"depth":235,"text":3873,"children":3980},[3981],{"id":3888,"depth":3450,"text":3889},{"id":3907,"depth":235,"text":3908},{"id":3950,"depth":235,"text":3951},{"id":3967,"depth":235,"text":3968},{"originalAnalysis":3986,"trendContext":3987,"practicalValue":3988},"We distinguish authentication identity, alignment and message safety, then interpret combined SPF, DKIM and DMARC evidence rather than treating any pass as trust.","Email authentication standards and deployment guidance continue to mature, including newer DMARC work, while alignment remains central to interpreting visible sender identity.","Readers can read common result fields, understand why mechanisms disagree and know when header evidence must be combined with context and independent verification.","2025-05-28","Understand what SPF, DKIM and DMARC authenticate, why alignment matters, and why a pass result is useful evidence rather than proof that a message is safe.",{"src":3992},"\u002Fimages\u002Fblog\u002Fcorecomponent-cover.webp",{},[1600,3089],[1603],{"title":3814,"description":3990},"3.blog\u002F7.corecomponent",[1607],"xwhfaPz4ZHZnthK7_2ME2nUJn6juo4pbkJBKPjkqX60",{"id":4001,"title":4002,"audience":4003,"authors":4004,"badge":4007,"body":4009,"category":367,"contentQuality":4102,"date":387,"description":4106,"extension":253,"featured":254,"image":4107,"indexable":257,"locale":258,"meta":4109,"navigation":257,"path":358,"relatedPosts":4110,"relatedTools":4111,"reviewedBy":382,"seo":4112,"stem":4113,"topics":4114,"updated":387,"userTask":4105,"verifiedAt":387,"__hash__":4116},"posts\u002F3.blog\u002F9.editorial-policy.md","Once Email Editorial and Review Policy",[7],[4005],{"name":11,"to":12,"avatar":4006},{"src":14},{"label":4008},"Editorial standards",{"type":18,"value":4010,"toc":4093},[4011,4014,4018,4021,4024,4028,4031,4034,4038,4041,4044,4048,4051,4054,4058,4065,4069,4072,4075,4079,4085],[21,4012,4013],{},"Once Email publishes practical material about receive-only temporary mailboxes, email safety and the engineering of this service. This policy explains the minimum standard a page must meet before it is listed, indexed or considered for advertising.",[37,4015,4017],{"id":4016},"topic-selection","Topic selection",[21,4019,4020],{},"An article must answer a specific question that is relevant to the service. We prioritise safe mailbox use, software testing, email authentication, message privacy and explanations of features that readers can verify on Once Email.",[21,4022,4023],{},"We do not publish instructions for bypassing another service's rules, creating deceptive accounts, evading identity controls, abusing promotions, sending spam or hiding unlawful activity.",[37,4025,4027],{"id":4026},"product-claims","Product claims",[21,4029,4030],{},"Statements about Once Email are checked against the production website and current code. Articles must accurately state that the service receives email only. They must not invent paid plans, guarantees, partnerships, user counts, response times or security certifications.",[21,4032,4033],{},"Temporary email reduces the need to disclose a permanent inbox in some situations; it does not guarantee anonymity, safety, delivery or acceptance by another website.",[37,4035,4037],{"id":4036},"sources-and-testing","Sources and testing",[21,4039,4040],{},"Technical claims should link to primary sources such as standards, vendor documentation or official product policies. When an article describes a Once Email feature, the reviewer tests the relevant production flow on desktop and mobile.",[21,4042,4043],{},"A source link does not transfer responsibility to its publisher. We check whether the source supports the claim, record when time-sensitive guidance was reviewed and avoid presenting an inference as a verified fact.",[37,4045,4047],{"id":4046},"author-and-review-information","Author and review information",[21,4049,4050],{},"Every indexed article displays its author, original publication date, material update date when applicable, and reviewer. A page without completed review metadata remains excluded from the blog listing and search index.",[21,4052,4053],{},"The named reviewer is responsible for checking factual consistency, safety boundaries, links, mobile presentation, SEO metadata and advertising eligibility. Editorial review is not legal, medical or security certification.",[37,4055,4057],{"id":4056},"translations","Translations",[21,4059,4060,4061,4064],{},"English is the reviewed source language during the current content rebuild. A translated legal or editorial page stays ",[95,4062,4063],{},"noindex"," until its meaning has been reviewed in that language. Machine-generated or unreviewed translations are not published as search-indexable content merely to increase page count.",[37,4066,4068],{"id":4067},"advertising-separation","Advertising separation",[21,4070,4071],{},"Mailbox pages, message content, attachments, tool work areas, contact forms and policy pages are not advertising locations. An article does not become eligible for advertising just because it is indexable. Advertising requires a separate quality review, consent readiness and route-level approval.",[21,4073,4074],{},"Sponsored content and paid placement are not currently offered. If this changes, commercial relationships will be clearly labelled and will not determine technical conclusions.",[37,4076,4078],{"id":4077},"corrections-and-updates","Corrections and updates",[21,4080,4081,4082,4084],{},"Substantive corrections update the visible review date. Minor spelling or layout changes do not change the date. If guidance becomes unsafe or cannot be verified promptly, it is removed from the listing and set to ",[95,4083,4063],{}," while it is reviewed.",[21,4086,4087,4088,4092],{},"Readers can report an error, broken source or unsafe recommendation through the ",[28,4089,4091],{"href":4090},"\u002Fcontact","contact and abuse page",". Reports should include the page URL and the statement that needs review.",{"title":234,"searchDepth":235,"depth":235,"links":4094},[4095,4096,4097,4098,4099,4100,4101],{"id":4016,"depth":235,"text":4017},{"id":4026,"depth":235,"text":4027},{"id":4036,"depth":235,"text":4037},{"id":4046,"depth":235,"text":4047},{"id":4056,"depth":235,"text":4057},{"id":4067,"depth":235,"text":4068},{"id":4077,"depth":235,"text":4078},{"originalAnalysis":4103,"trendContext":4104,"practicalValue":4105},"This policy connects search intent, product evidence, source choice, correction handling and indexing decisions into one auditable publication lifecycle.","Standards, provider behaviour and the Once Email interface can change, so publication quality depends on dated review and visible corrections rather than timeless claims.","Readers can see how claims are checked, how updates are recorded and how to report a factual problem; editors receive a concrete release standard.","How Once Email selects topics, verifies product claims, cites sources, handles translations, records updates and corrects published guidance.",{"src":4108},"\u002Fimages\u002Fblog\u002Feditorial-policy-cover.webp",{},[1331,380],[],{"title":4002,"description":4106},"3.blog\u002F9.editorial-policy",[4115],"editorial","bkf9xRfoLJ2f5aoHb14p0CYY7_RCALv6ta0kfKyqr9c",[4118,4119],{"title":3474,"path":1115,"stem":3659,"description":3650,"children":-1},{"title":3814,"path":1542,"stem":3997,"description":3990,"children":-1},1786643601910]