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SimpleLoginFirefox Relay
Freemium

Free tier available, with paid plans for more aliases and features; owned by Proton.

 Freemium

Free tier with a limited number of masks, paid plan for unlimited masks and a custom…

Android, Web, Browser extension Web, Browser extension
  • Open source alias generation with the backing of Proton
  • Aliases can be disabled individually to stop spam without changing your real address
  • Backed by Mozilla, a long-standing name in browser privacy
  • Simple mask creation directly from the browser
  • Best features and higher alias limits require a paid plan
  • Now tied into the Proton ecosystem after the acquisition
  • Free tier limits the number of masks available
  • Deeper integration is tied to the Firefox browser ecosystem
Web application, Browser extension Web application, Browser extension
Open source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

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