Proton Mail

Proton Mail is the encrypted email service of Proton AG, a technology company founded in 2014 by CERN scientists in Geneva, Switzerland.

Operating in Europe, Proton leverages Switzerland’s rigorous privacy laws, offering stronger protections against foreign surveillance alongside GDPR compliance. The service uses zero-access encryption, ensuring emails are encrypted on the user’s device before leaving their computer, meaning even Proton cannot read stored messages.

Key features include automatic end-to-end encryption for internal communications, password-protected emails for external recipients, and built-in tracker blocking. As an open-source platform, its code is publicly auditable.

By combining Swiss legal safeguards with advanced cryptography, Proton Mail provides a secure alternative to mainstream providers, ensuring user data remains exclusively under the owner’s control.