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Guerrilla MailFirefox Relay
Freemium

Disposable addresses are free; using your own domain costs 9.99 USD per year.

 Freemium

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

Web Web, Browser extension
  • No signup; address is ready immediately
  • Choice of several domains
  • Backed by Mozilla, a long-standing name in browser privacy
  • Simple mask creation directly from the browser
  • No encryption; inboxes are not private
  • Many sites block its domains
  • 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

Checked September 23, 2026

Checked September 22, 2026

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