Dear Plone,
With what U.S.-based third party MTA providers who are proactive about staying off blacklists have you been satisfied? Critical for getting user verification and password reset emails from Plone.
Yours Truly,
Chris Calloway
Hey Chris! The Foundation uses mailgun for this Discourse instance. I set up my own account to do outbound email for sites I host personally on a Linode, and that solved problems I was having with outbound emails getting classified as spam or being refused outright.