I pay $15 per year for a FastMail family account,[1] which allows me to use my own domain. The account includes only 200MB of space, but that works for me because I delete email from the server so that the US government can't access it, which they can do without a warrant.[2]
[1] https://www.fastmail.fm/signup/family.html
[2] https://www.eff.org/deeplinks/2012/11/when-will-our-email-be...