Klaviyo vs Proofpoint Comparison (2026)

Compare Klaviyo vs Proofpoint email services. In-depth analysis of features, pricing, security, privacy, and storage to find the best email provider for your needs.

Forward Email Team
Written by
Forward Email TeamVerified
Published
4/1/26
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Klaviyo. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Klaviyovs.Proofpoint

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.

Proofpoint

The leader in human-centric cybersecurity
"The leader in human-centric cybersecurity"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$20/moPricingSee Proofpoint 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 MBAttachments150 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. According to their website: Power smarter digital relationships

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

Proofpoint

Proofpoint is a closed-source email service. According to their website: The leader in human-centric cybersecurity

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

Compare Klaviyo with 78 email services