Proton Mail vs Brevo Comparison (2026)

Compare Proton Mail vs Brevo 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 Proton Mail. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Proton Mailvs.Brevo

Proton Mail

Secure email that protects your privacy
"Secure email that protects your privacy"
  • 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
$3.99/moPricing$15/mo
15 GBStorageNo Brevo does not support storage
25 MBAttachments20 MB
❌ Proton Mail claims to be open-source, but their back-end actually is closed sourceOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
❌ Requires you to download Proton Mail Bridge and forces vendor lock-inSMTPYes
❌ Requires you to download Proton Mail Bridge and forces vendor lock-inIMAPNo
❌ Proton Mail does not support POP3POP3No
NoAPIYes
⚠️ Proton Mail rewrites your emailsE2EE No
YesOpenPGP No
YesWKD No

Email Service Screenshots

Closed-source

Proton Mail

Proton Mail is a closed-source email service. Their website says: Secure email that protects your privacy

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

Brevo

Brevo is a closed-source email service. Their official description reads: The most approachable CRM to cultivate lasting customer relationships across Email, SMS, Chat and more

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

Compare Proton Mail with 78 email services