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

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