Mailjet vs Klaviyo Comparison (2026)

What are the differences between Mailjet and Klaviyo?

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 Mailjet. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Mailjetvs.Klaviyo

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
vs.

Klaviyo

Power smarter digital relationships
"Power smarter digital relationships"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$15/moPricing$20/mo
No Mailjet does not support storageStorageNo Klaviyo does not support storage
15 MBAttachments0 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
YesSMTPNo
NoIMAPNo
NoPOP3No
YesAPINo
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Mailjet

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

Mailjet is a closed-source email service.
Photo by Forward Email
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Closed-source

Klaviyo

Klaviyo is a closed-source email service. According to their website: Power smarter digital relationships

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