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10 Minute Mail vs Firefox Relay: catalog facts
10 Minute Mail	Firefox Relay
Free Free to use with no account.	Freemium Free tier with a limited number of masks, paid plan for unlimited masks and a custom…
Web	Web, Browser extension
No signup; inbox ready instantly Timer can be extended	Backed by Mozilla, a long-standing name in browser privacy Simple mask creation directly from the browser
Expired addresses stop receiving mail Replying and forwarding are disabled after expiry	Free tier limits the number of masks available Deeper integration is tied to the Firefox browser ecosystem
Web application	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.