It's interesting, 5 months ago we made the switch to Mailgun because we were afraid of this day. Basically, MailChimp didn't like Mandrill sending mass emails

It's interesting, 5 months ago we made the switch to Mailgun because we were afraid of this day. Basically, MailChimp didn't like Mandrill sending mass emails from the beginning. As far as I remember (5 months ago) Mandrill only allowed you to send emails one by one but Mailgun lets you send 1K emails at once. That, plus the fact that they changed their policy for verifying domains with no notice which affected many users (not us). http://blog.mandrill.com/we-are-making-domain-verification-mandatory.html http://blog.mandrill.com/we-are-making-domain-verification-m... "This is a breaking change for us, we didn't have any notice at all?! Very poor customer service!" -- Adam Curtis (Mandrill user, 7 months ago) Lucky for us we made the switch many months ago! FYI, I'm sad to see that MailChimp (as a company) cannot see how two divisions in the same company can compete. Like Amazon hosting Netflix and also competing with Netflix. IMO, Amazon management is smart enough to keep these two divisions separate enough so either one that'll do a better job will succeed.