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Kolab NowProton Mail
Paid

Paid subscription service.

 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
  • Operated in Switzerland since 2013
  • Email, calendars, contacts, files and video calls in one account
  • End-to-end encrypted email by default
  • Apps for iOS, Android, macOS, Windows, Linux and the web
  • Hosted service, not something you run yourself
  • Paid 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.