[patrickserrano]

We had a similar issue and ended up sticking with Mailgun but going with one of their larger contract plans which also gave us access to one of their Technical Account Managers. He's been fantastic, and helped us mitigate some of the issues we were running into. (It also ended up being a better value for the volume we were doing monthly.)

You can also configure their web hooks to report complaints back to you in near real-time: https://documentation.mailgun.com/en/latest/user_manual.html...