I mean that I'm still searching for the right client.
I have installed K9 which I'm sure will work but haven't set it up. The ProtonMail app works fine but doesn't play nicely with other services.
I *could* install something that doesn't use Google Play Services and frankly many apps don't need it. However, an interesting thing about the Aurora app store is that it reports on how many trackers are embedded into each Android app, talking not just to GAFA but also to ad networks and others. So I'm trying to find apps that, if not FOSS themselves, minimize the embedded trackers.
Stuff like Waze installs but refuses to work and won't say what's missing that it's looking for. So there's a good front end for Open Street Maps.
The journey continues....
- Evan