Mandrill, Mailgun, Sendgrid, SES... they've all got their place. I find the deliverability comparable (although I'm least experienced with SES). Where they shi

Mandrill, Mailgun, Sendgrid, SES... they've all got their place. I find the deliverability comparable (although I'm least experienced with SES). Where they shine perhaps, is in reporting and tracing of issues. Postmark do look good and perhaps with _only_ transactional email, their deliverability could be among the best.