It sucks when you send out a few promotional emails and suddenly you get the notice from your Email Marketing Service, "Your account has been closed for violating our terms of service" But they never tell you which terms were violated. If you contact their support you just get a form message, with no real explanation. And no option to appeal.

That's right. Some email marketing services will shut you down just because the engagement with your list isn't up to what they think it should be. 

They don't seem to realize some marketers may have had to step away for some reason and are now trying to reengage with their audience or engagement may be low for any number of other reasons. Many of the other services don't realize what's going on because they're nerds and not marketers and don't understand our business model.

You're just a small customer to the giant email marketing services and so banning your account hardly matters to them. Actually they benefit because they save on resources.

It’s no secret, most Email Marketing service providers don’t like marketers, especially affiliate marketers, but we're different.

Marketers are welcome at SMTP Depot. However, we don’t tolerate spammers and we know the difference. We’re marketers too, so we understand the need for quality Email Marketing services, geared towards Internet Marketers.