Compare software

CounterMailProton Mail
Paid

Paid accounts; prices are listed on the provider's site.

 Freemium

Free accounts work in the mobile and web apps; the desktop apps are offered as a free…

Web Windows, macOS, Linux, Android, iOS, Web
  • Automatic OpenPGP encryption with 4096-bit keys
  • Diskless web servers that boot from CD-ROM
  • End-to-end encrypted email by default
  • Apps for iOS, Android, macOS, Windows, Linux and the web
  • Paid service
  • Closed source hosted service
  • Only works with a Proton account
  • Desktop apps need a paid plan after the trial
Web application, Hosted service Downloadable app, Web application, Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Needs internet Not stated if it works offline

Checked October 2, 2026

Checked September 23, 2026

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