Vade Secure vs Proton Mail Comparison (2025)

What are the differences between Vade Secure and Proton Mail?

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 Vade Secure.

Email Service Comparison

20 facts in comparison
Vade Securevs.Proton Mail

Vade Secure

Simple, Sophisticated Email Security Powered by AI
"Simple, Sophisticated Email Security Powered by AI"
  • 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
Requires you to talk to a sales teamPricing$3.99/mo
Requires 3rd partyStorage15 GB
50 MBAttachments25 MB
NoOpen-Source❌ Proton Mail claims to be open-source, but their back-end actually is closed source
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
❌ Requires 3rd partySMTP❌ Requires you to download Proton Mail Bridge and forces vendor lock-in
❌ Requires 3rd partyIMAP❌ Requires you to download Proton Mail Bridge and forces vendor lock-in
❌ Requires 3rd partyPOP3❌ Proton Mail does not support POP3
YesAPINo
NoE2EE ⚠️ Proton Mail rewrites your emails
NoOpenPGP Yes
NoWKD Yes

Email Service Screenshots

Closed-source

Vade Secure

Vade Secure is a closed-source email service. Their website says: Simple, Sophisticated Email Security Powered by AI

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

Proton Mail

Proton Mail is a closed-source email service. According to their website: Secure email that protects your privacy

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

Compare Vade Secure with 78 email services