I've been very happy with kolabnow.com services for a biz email acct, and I'm likely to switch personal over there too. Not free, but inexpensive, FOSS, Private, Swiss-located, and really solid service and support. Among a ~dozen others I've tried or still using, Kolab is the best of the lot.

(&yes, I use Gmail for junk or transactional stuff; need the acct for an Android mobile, and their UI is a horrific kludge of UI conceits trying to showcase their 'mad design skilz' - yuk!)