MailerSend vs ActiveCampaign Comparison (2025)

What are the differences between MailerSend 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 MailerSend.

Email Service Comparison

20 facts in comparison
MailerSendvs.ActiveCampaign

MailerSend

Intuitive email API and SMTP
"Intuitive email API and SMTP"
  • 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
$288/yrPricing$15/mo
No MailerSend does not support storageStorageNo ActiveCampaign does not support storage
25 MBAttachments10 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI TTI
YesSMTPYes
NoIMAPNo
NoPOP3No
YesAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

MailerSend

MailerSend is a closed-source email service. Their official description reads: Intuitive email API and SMTP

MailerSend is a closed-source email service.
Photograph by Forward Email
Go to site
Closed-source

ActiveCampaign

ActiveCampaign is a closed-source email service. Their official description reads: Postmark, the leading service for transactional email, is now part of ActiveCampaign

ActiveCampaign is a closed-source email service.
Screenshot by Forward Email
Go to site

Compare MailerSend with 78 email services