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Runbox vs Proton Mail: catalog facts
RunboxProton Mail
Paid

Paid subscription after a free 30-day trial.

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
  • Data hosted in Norway under Norwegian privacy law and GDPR
  • No advertising
  • End-to-end encrypted email by default
  • Apps for iOS, Android, macOS, Windows, Linux and the web
  • No free plan after the trial
  • Hosted service, so you rely on the provider for your mail
  • 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
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked September 23, 2026

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