Had a client just fire Mandrill. They got frustrated because two of their clients were failing to receive any email from their domain. We did SPF, DKIM, and domain verification. Still went into spam. Both of their clients looked at their security software and found 0 emails being blocked from the domain. All of the blocked email was from Mandrill’s domain (“hey, they are just spoofing the domain, it’s not them it’s really Mandrill”). They said they can’t whitelist Mandrill, that’s a spam factory. So now our client wants to send their own email directly from their domain.
I can’t believe it’s impossible for recipient firewalls to see that the mail is coming from the client’s actual domain instead of randomCrapMandrillapp.com. And I can’t believe even with doing all the trust-maximizing things, messages still get thrown into spam all the time. And, my understanding was that this and SendGrid were the industry standard, robust way to send emails, but these organizations are looking at it like a total hack.