Postmark vs Mailtrap Comparison (2026)

What are the differences between Postmark and Mailtrap?

Forward Email Team
Written by
Forward Email TeamVerified
Published
2/1/26
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Postmark. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Postmarkvs.Mailtrap

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.

Mailtrap

Email Delivery Platform that delivers just in time. Great for businesses and individuals
"Email Delivery Platform that delivers just in time. Great for businesses and individuals"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$15/moPricing$10/mo
No Postmark does not support storageStorageNo Mailtrap does not support storage
10 MBAttachments10 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
TTI TTI No
YesSMTPYes
NoIMAPNo
NoPOP3No
YesAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Postmark

Postmark is a closed-source email service. Their official description reads: The email delivery service that people actually like

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

Mailtrap

Mailtrap is a closed-source email service. Its description from its website is: Email Delivery Platform that delivers just in time. Great for businesses and individuals

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