Proton Mail
End-to-end encryption, open-source apps, part of a wider suite (Drive, Calendar, VPN, Pass).
- Based in
- Geneva, Switzerland
- Licence
- Proprietary (open-source clients)
- Hosting
- cloud
- Data residency
- Servers in Switzerland; end-to-end encrypted, Swiss privacy law.
- Free tier
- Free - 1 GB, 1 address.
- Paid from
- Mail Plus ~€3.99/mo (annual).
- Best for
- Anyone who wants encrypted mail under Swiss jurisdiction.
- Alternative to
- Gmail, Outlook / Microsoft 365
Sources: proton.me (Mon Jul 06 2026 00:00:00 GMT+0000 (Coordinated Universal Time))