I generally recommend against setting up your own email server. Most people just want to use it and not maintain it. However, in circumstances like this where

I generally recommend against setting up your own email server. Most people just want to use it and not maintain it. However, in circumstances like this where you want to escape a crappy solution, I have been recommending "Mail In A Box" https://mailinabox.email https://mailinabox.email It's as close to a turnkey solution as I've found. I've been using it for one of my domains for a few years now. You'll need to be comfy with the CLI to set it up. You'll also need a VPS. EDIT: didn't realize other folks had already recommended it. It's worked great here. :)