Proton Mail provides automatic end-to-end encryption for message bodies and attachments exchanged between Proton Mail users. Key features include:
- Automatic end-to-end encryption between Proton Mail users
- Password-protected emails or configured PGP for end-to-end encrypted communication with external recipients
- Zero-access encryption for stored message bodies and attachments
- Based in Switzerland
- Free tier available
- Available across all major platforms
Ordinary email exchanged with external providers such as Gmail is not end-to-end encrypted unless you use password-protected emails or PGP. TLS protects messages in transit when supported, but the external provider can still access them. Subject lines and sender and recipient addresses are not end-to-end encrypted.
See what Proton Mail encrypts and how to use PGP with external contacts.