If you're worried about privacy, I hope all your contacts use GPG. Practically none of my contacts know how to use that. Practically all of my contacts use Gmail and Outlook.com. That means all of my emails will end up in Google and Microsofts hands anyway. I'm sure they will build shadow profiles on me (especially since I'm a former customer, using the same domain alias on my new host as I did with them).

That being said, I recently switched to https://mailbox.org (they have a very good reputation). Mainly because I love the web UI it's an awesome service and I get CalDAV and CardDAV that works beautifully.