ProtonMail for iOS and Android is open source

Last year, encrypted mail service provider ProtonMail announced that ProtonMail for iOS client is open source, and has adopted the GPLv3 open-source license to host the source code on GitHub. Now, the company has announced that ProntonMail for Android client is also open-source, the source code can be found on its GitHub page.

Proton said that at this point, all applications used by users to access the ProtonMail inbox have been open-sourced. At the same time, these applications have also passed independent security audits to preserve user trust.

In order to make its Android application open source, Proton commissioned an independent security audit by SEC Consult, and as a result, no vulnerabilities were found. It published a complete audit report on the website.

In fact, as early as 2015, ProtonMail’s web application has been open-sourced. In addition, it will allow third-party security experts to point out potential vulnerabilities in the application and earn some cash through the vulnerability bounty program.