Postmark vs HEY Comparison (2025)

What are the differences between Postmark and HEY?

Forward Email Team
Written by
Forward Email TeamVerified
Published
7/1/25
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Postmark.

Email Service Comparison

20 facts in comparison
Postmarkvs.HEY

Postmark

The email delivery service that people actually like
"The email delivery service that people actually like"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

HEY

We finally fixed your email + calendar!
"We finally fixed your email + calendar!"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$15/moPricing$99/yr + $12/mo per user
No Postmark does not support storageStorage100 GB
10 MBAttachmentsHEY does not use regular email attachments, which also prevents them from being encrypted with PGP
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
TTI TTI No
YesSMTPNo
NoIMAPNo
NoPOP3No
YesAPINo
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Postmark

Postmark is a closed-source email service. Their website says: The email delivery service that people actually like

Postmark is a closed-source email service.
Screenshot by Forward Email
Visit Website
Closed-source

HEY

HEY is a closed-source email service. According to their website: We finally fixed your email + calendar!

HEY is a closed-source email service.
Photograph by Forward Email
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Compare Postmark with 78 email services