I kind of agree, I've used SES for a side project through Mailchimp's STS api and it is pretty simple and reliable, and quite free at first. Other than some ot

I kind of agree, I've used SES for a side project through Mailchimp's STS api and it is pretty simple and reliable, and quite free at first. Other than some other bells and whistles like handling unsubscribes I'm not sure MailGun is that much more revolutionary. I've heard people say before that to beat Gmail you can't just build an email service 10% better. Gmail works well enough that 10% isn't worth the switching costs. Same goes for this I believe.