@davidoclubb @Tutanota @mplammers just a heas up on Tutanota: they recently updated their mobile app in a way that introduces a dependency on a new version of an underlying library that the app does not include, & #fdroid neglects to notice the compatibility problem thus installs a broken version. So if you switch to #Tutanota you might want to check whether the phone app works 1st & be careful with upgrades.