GMX vs Proton Mail Comparison (2024)

What are the differences between GMX and Proton Mail?

Forward Email Team
Written by
Forward Email TeamVerified
Published
11/1/24
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to GMX.

Email Service Comparison

20 facts in comparison
GMXvs.Proton Mail

GMX

Create a free email account fast
"Create a free email account fast"
  • 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
$29.99/yrPricing$3.99/mo
65 GBStorage15 GB
100 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
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
NoAPINo
NoE2EE ⚠️ Proton Mail rewrites your emails
YesOpenPGP Yes
NoWKD Yes

Email Service Screenshots

Closed-source

GMX

GMX is a closed-source email service. Its description from its website is: Create a free email account fast

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

Compare GMX with 79 email services