> but the catch is that to use their end-to-end encryption you’re forced to use their apps (or, on macOS, run a background “bridge”).

> That’s a no go for me, because I love Apple’s Mail app on macOS and iOS, it just works perfectly for my needs, and I don’t want to give that up.

Well, you can indeed use Apple Mail by running the Bridge. Not sure I understand the point here.

On macOS you have to add another service in background and i don’t like it, on iOS and iPadOS you have to use their app and I want to use Mail by Apple.