Forward Email vs Proton Mail Comparison (2026)

What are the differences between Forward Email and Proton Mail?

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 email service alternative. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Forward Emailvs.Proton Mail

Forward Email

⭐ Top Rated
Email for everyone
"Email for everyone"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

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
$3/moPricing$3.99/mo
10 GB pooledStorage15 GB
50 MBAttachments25 MB
YesOpen-Source❌ Proton Mail claims to be open-source, but their back-end actually is closed source
YesSandboxed Encryption No
YesUnlimited DomainsNo
YesUnlimited AliasesNo
TTI TTI No
YesSMTP❌ Requires you to download Proton Mail Bridge and forces vendor lock-in
YesIMAP❌ Requires you to download Proton Mail Bridge and forces vendor lock-in
YesPOP3❌ Proton Mail does not support POP3
YesAPINo
⚠️ Opt-inE2EE ⚠️ Proton Mail rewrites your emails
YesOpenPGP Yes
YesWKD Yes

Email Service Screenshots

⭐ Top RatedOpen-source

Forward Email

⭐ Top RatedRecommended

Forward Email is an open-source email service. Its description from its website is: Email for everyone

Forward Email is an open-source email service.
Photo by Forward Email
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Closed-source

Proton Mail

Proton Mail is a closed-source email service. Its description from its website is: Secure email that protects your privacy

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