Spam Hero vs Mailjet Comparison (2025)

What are the differences between Spam Hero and Mailjet?

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 Spam Hero.

Email Service Comparison

20 facts in comparison
Spam Herovs.Mailjet

Spam Hero

Cloud-Based Spam Filtering
"Cloud-Based Spam Filtering"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Mailjet

Effortlessly create and deploy marketing and transactional emails in one place
"Effortlessly create and deploy marketing and transactional emails in one place"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$8/moPricing$15/mo
Requires 3rd partyStorageNo Mailjet does not support storage
50 MBAttachments15 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
❌ Requires 3rd partySMTPYes
❌ Requires 3rd partyIMAPNo
❌ Requires 3rd partyPOP3No
YesAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Spam Hero

Spam Hero is a closed-source email service. Their website says: Cloud-Based Spam Filtering

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

Mailjet

Mailjet is a closed-source email service. Their official description reads: Effortlessly create and deploy marketing and transactional emails in one place

Mailjet is a closed-source email service.
Screenshot by Forward Email
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Compare Spam Hero with 78 email services