Swiss company Proton Technologies AG in his blog about the opening ProtonMail Bridge applications for all supported platforms (Linux, MacOS, Windows). The code is distributed under the GPLv3 license. Additionally published applications. Interested experts are invited to join .
ProtonMail Bridge is designed to work with the ProtonMail secure email service using your preferred desktop email client, while maintaining a high level of protection for data transmitted over the network. Previously, the application was only available on paid plans. Thus, the company continues the process of gradual open source code that began in 2015. Previously, the following were already transferred to the open category:
Source: opennet.ru