Great post! For e-mail provider you can also consider Posteo.de, and for e-mail application on Android and AOSP (forks) you can use P=P (a material design K-9

Great post! For e-mail provider you can also consider Posteo.de, and for e-mail application on Android and AOSP (forks) you can use P=P (a material design K-9 fork with PGP support). I'm using Soverin, btw. Happy with them. As for AOSP forks there's a lot of them, not all equally ready. There's CopperheadOS, there's /e/. There's also PostmarketOS which is like a mobile Linux foundation for other OSes much like Mer was. There's SFOS (SailfishOS) which has Android emulation (if licensed), and all kind of mobile versions of Linux distributions such as Manjaro, Arch, Debian, Ubuntu, PureOS, etc. If you're into that, Pinephone might be interesting. They got 13 OSes ready to be loaded.