“One of our guiding principles is transparency. You deserve to know who we are, how our products can and cannot protect you, and how we keep your data private. We believe this level of transparency is the only way to earn the trust of our community.
To that end, open source has long been a priority at Proton. Our web app has been open source since 2015, our iOS app is open source, our desktop Bridge app is open source, and all ProtonVPN apps are open source. … Today we add the ProtonMail Android app to this list.”