Set up DMARC and see who's sending email using your brand's domain.
x
Two paper planes.

Migration Guides

Switching to Postmark? Our handy migration guides have everything you need to know about making the shift.

Still on the fence about switching to Postmark?

Here’s what our customers think of us.

Wow, @gmail deliveries via @postmarkapp is really fast, ~1s! Seems to have an excellent #ISP reputation. #transactional #mails #service

David Jimenez

David Jimenez

via Twitter

OMG! @postmarkapp is a chef's kiss. Mandrill or SendGrid is never again.

Yegor Zubarets

Yegor Zubarets

via Twitter

Can't say enough good things about @postmarkapp. 90 minutes to implement end to end delivery and open tracking.

Bryan Marble

Bryan Marble

via Twitter

Before Postmark we were using SendGrid, but we had lots of problems with the IP reputation, and they wouldn't move us to another IP range. So we decided change providers, and we are very happy with Postmark. 

Ricardo Fontanelli

Ricardo Fontanelli

I don't plug products much, but good god damn @postmarkapp has made us very, very happy. An order of magnitude better than running our own mail.

Nate

Nate

via Twitter

BTW @postmarkapp is bloody lovely

Allen

Allen

via Twitter

Postmark every day. UX is great. Delivery is top-notch and super fast. I've also used Sparkpost and Mailgun and they just don't compare.

Pete Keen

Pete Keen

via Twitter

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.

P. Schipper

Digital Creative at Creative Kids Concepts

Wow, even after two years of using Postmark I’m still surprised by how much you value your customers!

Linus Metzler

Linus Metzler