Switching to Postmark? Our handy migration guides have everything you need to know about making the shift.
Everything you need to know about moving from SendGrid to Postmark
Everything you need to know about moving from Mailgun to Postmark
Everything you need to know about moving from SES to Postmark
Everything you need to know about moving from SparkPost
Everything you need to know about moving from Mailchimp Transactional to Postmark
Everything you need to know about moving from Resend to Postmark.
Here’s what our customers think of us.
...I've been with Postmark for a few months. Their system is definitely better than SendGrid and SparkPost...two services I tried before moving on to Postmark.
A superior transactional email service, with unmatched customer support
Easy to set up. Great API. Rapid mail delivery and no spam issues. We moved from Mandrill because of terrible deliverability and am pleased to say it’s been well worthwhile....we’ve even saved money. Thanks Postmark Team….you rock!!
You have an excellent user interface and very good spam reputation service. Combined with the pay-what-you-use subscription a better alternative to Mailchimp and its expensive Mandrill moneymaking machine.
Had a horrific experience with SendGrid so i would avoid. We use Postmark and are very happy with it :D
Postmark blows every other transactional email product out of the water.
We used to get complaints about emails ending up in spam.  After switching to Postmark we’ve had zero issues with that.  Really reduced our headaches.
I came from Mailgun, which gave me headaches. Every second counts when we send an alert to gamers. I love the fact that I can see when mails are opened and how long the whole process took. It just works, which is not so obvious apparently (looking at Mailgun). Thanks Postmark Team <3 !
At #Bokio we are now using @postmarkapp instead of @Mail_Gun. I really liked mailgun but we needed far better delivery as our emails are very critical.