I can’t say that I agree with you as far as the Apple stuff, but as a long time Gnome user, I agree with you 100% about Gnome. I loved Gnome 2, but even after all these years Gnome 3 has not grown on me. I’m actually running it on my main desktop PC right now so it’s not for lack of trying. Maybe I’m just a dinosaur but I’d take some Gnome 2 with Compiz over this mess of a desktop environment even still.
We just recently purchased Mail Assure with Cove Data Protection from N-able to achieve a similar goal, but unfortunately I don’t have any experience with it yet to advise if it is any good. It is an option though.