How Long Does a MailOnce Temporary Inbox Stay Active?
Understand the active lifetime of a MailOnce inbox and the boundary between extension and final expiry.
How to read the lifetime
A MailOnce inbox begins as a short active session. Its visible timer tells you how long the current inbox remains usable, while Extend Inbox can give the same address more working time within the free lifetime limit.
The timer describes a working window
The visible lifetime is best read as time available to finish the task attached to the current address. It is not a claim of permanent ownership, and it should not be treated like mailbox storage.
Extend only when continuity still matters
If the same website may still send another code, link, or confirmation, preserving the current address can be useful. If the task is already finished, extra time adds little value.
The useful rule
Treat the timer as the lifetime of the current working inbox. Finish the task while it is active, and extend only when the same address is still needed.
Try MailOnce
Use the current inbox while its time still matters
Open a temporary inbox for the task in front of you, watch the remaining time, and extend only when you still need the same address.
Create temporary emailRelated inbox lifecycle guides
Continue with the lifecycle topics closest to what you just read.
What Happens When a Temporary Inbox Expires?
See what changes when the active session reaches zero and why temporary email should not hold unfinished important work.
Read guideWhat Happens to Messages After a Temporary Inbox Expires?
Understand the difference between active access and later technical retention without treating the inbox as storage.
Read guideCan You Reopen an Expired Temporary Inbox?
Learn why an expired session should be treated as finished rather than a mailbox you can depend on reopening.
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