Protonmail is open-sourced under GPLv3.
https://github.com/ProtonMail/proton-mail-android/blob/release/LICENSE
Iβm using Obtainium instead of F-Droid so that I can choose to install and auto-update from the developerβs source website APKs in addition to centralized repositories like F-Droid.
I really like obtanium, but its important to note that fdroid provides and independent code check on releases, a dodgy release via obtanium would not be spotted. Pros & cons
You schould be carefull with your choice to use obtainium i dont want to say that f-droid is super secure because that does not exist but look at this scenario:
A developer account on github get hacked and the bad actor pushes a malicious apk update you are going to be hacked to easy and quickly.
Instead if you are waiting for updates from f-droid in the meantime everyone knows that the developer got hacked.
The easy path that obtanium offers could be a danger path but.... anyway at least is a dangerous opensource path πππ
