Temporary email questions, answered
Once Email creates temporary addresses for receiving messages and verification codes without registration. It cannot send email. Review these answers before using a temporary address for a service.
A disposable mailbox is a temporary receiving address. It can reduce exposure of your regular inbox, but it does not guarantee anonymity or block every unwanted message.
A temporary inbox is designed for short-lived receiving and expires on a schedule. A regular email account is intended for ongoing communication, account recovery and long-term access.
Choose 10 minutes, one hour or one day before using the address. Save any necessary information before that window ends because expired inboxes are not a dependable recovery method.
No. Once-email.com only receives email and does not provide any sending function.
Use it only for low-risk, short-term sign-ups. Do not use it for banking, health, work, long-term access, or accounts that rely on email recovery.
It can keep your regular address out of a sign-up form, but messages in a temporary inbox may still contain personal data. Review the service before use.
Some services accept temporary addresses and others block them. Avoid using one where losing inbox access could lock you out of the account.
Do not rely on recovery after expiry or deletion. Save a necessary code or record before the lifetime ends, and use a regular address for anything that needs durable access.
No account registration is required. Temporary addresses and messages follow the retention periods described in our Privacy Policy; do not receive sensitive information here.
Attachments may be available when the sender and receiving service accept them. Treat every file as untrusted, verify its context and avoid opening unexpected downloads.
Received messages do not consume the address-switch allowance. Delivery and retention are still subject to abuse controls, the selected inbox lifetime and operational limits.
Message and attachment limits are enforced by the receiving service and may change. Check the size shown before downloading an attachment, and use the local attachment budget tool when estimating outbound provider limits.
The sender may be delayed, the address may have expired, or the other service may reject temporary-email domains. Confirm the address and lifetime first; do not keep switching addresses to bypass another service's policy.
Yes. Once Email supports modern mobile browsers, with the same receive-only and expiry limitations as the desktop experience.