I confess my preferred mail provider is Gmail with a grandfathered account.
But the next best thing is mxroute.org. It’s run by LET moderator jarland and he knows what he’s doing. Email these days is a never-ending battle with RBLs, spam, IP reputation, etc. Yes, you can run postfix on a LEB but if you want reliable delivery and hassle-free email, give mxroute.org a shot.