I've tested every service on the list and I vote for Elastic Email.
Why isn't postmark in the comparison?
Thanks for great matrix. Have you got any comparison on SMTP.COM?
After going through send grid, mailjet, now happiest with mandrillapp
Although there is no telephone support, the support we have received has been excellent.
Very knowledgeable and prompt customer support, both with regards to the platform and deliverability advice in general, never any issues with up time
Très belle solution avec des super tarifs