How to send Email in WordPress
I’ve been working for almost 2 months now with the guys from MailPoet, and there I’ve done some support along with @rafaehlers and from what I can see from his report on most of the tickets we receive are caused by bad email servers on shared hosting.
Don’t get me wrong, I’m not saying that they don’t know how to do it, but the way they need to do thing to avoid spammers make they email server a crap one.