1hemail vs Mail.tm: access, lifetime and use cases
Reviewed 31 October 2026.
Compare the published features and practical trade-offs before choosing a temporary inbox.
How the two workflows differ
Mail.tm documents an account-based REST API for creating mailboxes and receiving messages. API authentication and account lifecycle differ from simply opening a short-lived inbox. Provider documentation was reviewed on 31 October 2026. These are published features, not a delivery benchmark or a claim about every plan.
When to choose each service
For automated checks, review the API authentication, message retrieval and rate-limit documentation. 1hemail currently has no supported public testing API; it is designed for manual receiving in the browser.
What a one-hour inbox includes
1hemail provides browser-based receiving with no account registration after a human check. New messages are polled every five seconds. Detected numeric codes have copy buttons, small attachments can be downloaded, and the original message can be saved as .eml. Remote images in formatted mail are blocked until you allow them. These features do not prove that a sender will accept the address or deliver a message.
Before using either option
Try a permitted, low-stakes task first. Check that the whole address was copied, keep access to the inbox and save anything needed before its expiry. Use a durable mailbox for purchases, recovery, financial information and accounts you plan to keep. Do not rely on a temporary inbox to cancel a subscription.
Related guides
See the alternatives decision guide, delivery troubleshooting and private inbox access guide.