Once Email official documentation · v1

Inbox lifecycle

Inbox lifecycle: Authoritative product and developer guidance for receiving temporary email, troubleshooting delivery, and testing authorized email flows safely.

Reviewed 15 August 2026

What you can do

Inbox lifecycle: Authoritative product and developer guidance for receiving temporary email, troubleshooting delivery, and testing authorized email flows safely. The API response createdAt, expiresAt, lifetimeMinutes, status, and serverTime are authoritative UTC facts. Verify the current page version and follow the linked next step; never infer a capability from a screenshot, old article, or package name.

Failures and recovery

Inbox lifecycle: Authoritative product and developer guidance for receiving temporary email, troubleshooting delivery, and testing authorized email flows safely. Refreshing checks status and messages but never extends expiry or consumes a creation allowance. Verify the current page version and follow the linked next step; never infer a capability from a screenshot, old article, or package name.

Security and limits

Inbox lifecycle: Authoritative product and developer guidance for receiving temporary email, troubleshooting delivery, and testing authorized email flows safely. Switching or deletion atomically clears the old address, token, in-flight requests, message list, and polling owner. Verify the current page version and follow the linked next step; never infer a capability from a screenshot, old article, or package name.