Proton Mail was released as a public beta on 16 May 2014[11] as an end-to-end encrypted email service after a year of crowdfunding.

[22][23][24] Released for public beta on 16 November 2020, Proton Drive is a cloud storage solution with end-to-end encryption.

SimpleLogin also provides additional security features such as PGP encryption and two-factor authentication on a variety of platforms including the web, mobile apps and browser extensions.

Released for public beta on 20 April 2023,[28] Proton Pass is a cloud based password manager solution with end-to-end encryption.

[35] While product-related data is usually end-to-end encrypted or not stored, certain account information is able to be passed to authorities with a valid court order, like client IP addresses (if logging is enabled) or recovery email.

It maintains two data centers, one in Lausanne and another in Attinghausen (in the former K7 military bunker under 1,000 meters (3,300 ft) of granite rock) as a backup.

[37][38][39] Each data center uses load balancing across web, mail, and SQL servers, redundant power supply, hard drives with full disk encryption, and exclusive use of Linux and other open-source software.

[40] In December 2014, Proton Mail joined the RIPE NCC in an effort to have more direct control over the surrounding Internet infrastructure.

The current members of the board of trustees are Andy Yen, Antonio Gambardella, Carissa Véliz, Tim Berners-Lee and Dingchao Lu.

[47] The company has been partially funded by FONGIT[48][43][44][49] (the Fondation Genevoise pour l'Innovation Technologique) and the European Commission.