I use mailgun free-tire and am very happy. Basically you have to set up your MX record and that's it. I use gmail's "send as" feature to send from my domain, an

I use mailgun free-tire and am very happy. Basically you have to set up your MX record and that's it. I use gmail's "send as" feature to send from my domain, and setup a catch-all forwarding rule of "*@mydomain.com -> mygmail@gmail.com" because I like gmail's UI. I even have a "spam@mydomain.com -> myspammailbox@gmail.com" for shady websites.