Compare software

Proton MailCounterMail
Freemium

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

 Paid

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

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

Checked September 23, 2026

Checked October 2, 2026

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