Klaviyo vs Mimecast Comparison (2025)

What are the differences between Klaviyo and Mimecast?

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 Klaviyo.

Email Service Comparison

20 facts in comparison
Klaviyovs.Mimecast

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
vs.

Mimecast

Email & Collaboration Security
"Email & Collaboration Security"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$20/moPricingSee Mimecast plans (requires you to talk to a sales team) (according to a Reddit thread it may cost upwards of +$1000-2000 per month)
No Klaviyo does not support storageStorageUnknown
0 MBAttachments200 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
NoSMTP❌ Requires 3rd party
NoIMAP❌ Requires 3rd party
NoPOP3❌ Requires 3rd party
NoAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Klaviyo

Klaviyo is a closed-source email service. Their website says: Power smarter digital relationships

Klaviyo is a closed-source email service.
Photograph by Forward Email
Visit Website
Closed-source

Mimecast

Mimecast is a closed-source email service. Their official description reads: Email & Collaboration Security

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

Compare Klaviyo with 78 email services