Local inbox history helps you return to available temporary inboxes in the browser where you created them. It is a convenience for finding the correct inbox, not a promise of permanent recovery or a backup of every received message.
An address is not the access credential
Your temporary email address tells a sender where to send mail. The current workspace also needs the private access information kept in your browser to read that inbox. Knowing or copying the address alone is not enough to recreate authorized access.
Do not share screenshots or exports that include private browser data. A person with access to your unlocked browser may also be able to use its active inboxes. For that distinction, see the inbox privacy guide.
Keep the original browser context
If you cannot find a previous inbox, first check the same browser profile and site origin you used to create it. Different browsers, devices and profiles do not automatically share local data. Opening the site through a different hostname can also use a different storage context; local history does not migrate itself to another address.
Clearing site data can remove the information used to open saved inboxes. A private browsing session may discard its local data when the private windows close. MDN documents this storage behavior. Do not rely on private-session history for later access.
History does not stop expiry
An inbox listed locally still has a server-side lifetime. Refreshing the page, reopening history or pasting a saved address does not extend it. A message can also reach its retention limit before you expect it. Read how temporary email expires before troubleshooting recovery.
If the original inbox has expired, create a new address for a new low-risk task. That new address will not receive messages sent to the old one or restore old mail. For an important external account, follow that service's recovery process using a lasting address you control.
Keep separate records without keeping secrets
For a harmless test, you can record which test case used which address and whether delivery succeeded. Do not put inbox credentials, OTP values or private reset links into public notes. Local browser history should not be used as a substitute for a durable mailbox when records matter.
Will signing in on another device restore free local history?
The browser-bound free history is not a cloud backup. This guide does not promise synchronization or recovery on another device.
Does closing an ordinary tab always lose the inbox?
Not necessarily. Continued access depends on retained browser data and the inbox remaining active; closing a tab does not pause its timer.
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