Postmark vs ActiveCampaign Comparison (2025)

What are the differences between Postmark and ActiveCampaign?

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.ActiveCampaign

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.

ActiveCampaign

Postmark, the leading service for transactional email, is now part of ActiveCampaign
"Postmark, the leading service for transactional email, is now part of ActiveCampaign"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$15/moPricing$15/mo
No Postmark does not support storageStorageNo ActiveCampaign does not support storage
10 MBAttachments10 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
TTI TTI TTI
YesSMTPYes
NoIMAPNo
NoPOP3No
YesAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Postmark

Postmark is a closed-source email service. Its description from its website is: The email delivery service that people actually like

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

ActiveCampaign

ActiveCampaign is a closed-source email service. Its description from its website is: Postmark, the leading service for transactional email, is now part of ActiveCampaign

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