Startmail vs Brevo Comparison (2025)

What are the differences between Startmail and Brevo?

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 Startmail.

Email Service Comparison

20 facts in comparison
Startmailvs.Brevo

Startmail

Private email you can trust
"Private email you can trust"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Brevo

The most approachable CRM to cultivate lasting customer relationships across Email, SMS, Chat and more
"The most approachable CRM to cultivate lasting customer relationships across Email, SMS, Chat and more"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$7/moPricing$15/mo
20 GBStorageNo Brevo does not support storage
25 MBAttachments20 MB
NoOpen-SourceNo
❌ Startmail claims to use a User Vault, but this statement has not been audited and their source code is closed-sourceSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
YesSMTPYes
YesIMAPNo
YesPOP3No
NoAPIYes
⚠️ Supported if both sender and recipient are using OpenPGPE2EE No
⚠️ Supports OpenPGP, but does not support WKDOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Startmail

Startmail is a closed-source email service. Their official description reads: Private email you can trust

Startmail is a closed-source email service.
Photograph by Forward Email
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Closed-source

Brevo

Brevo is a closed-source email service. According to their website: The most approachable CRM to cultivate lasting customer relationships across Email, SMS, Chat and more

Brevo is a closed-source email service.
Screenshot by Forward Email
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Compare Startmail with 78 email services