Proton Mail vs GMX Mail

Proton Mail9.0Visit GMX Mail8.4Visit

Higher score Proton Mail #3 in Personal Email Services 9.0/10 Free plan Free planFree trial✓ 1 of 3 features Visit Proton Mail

vs

GMX Mail #8 in Personal Email Services 8.4/10 Free plan Free plan✓ 1 of 3 features Visit GMX Mail

• Proton Mail fits best

  Privacy-focused users

• GMX Mail fits best

  People who want a free, feature-rich mailbox

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Side by side

Feature	Proton Mail 9.0/10 Visit ↗	GMX Mail 8.4/10 Visit ↗
At a glance
Editor score	9.0	8.4
Ranking	#3 in Personal Email Services	#8 in Personal Email Services
Best for	Privacy-focused users	People who want a free, feature-rich mailbox
Pricing model	Free plan + paid	Free
Starting price	$3.99/user/mo	Free plan
Free plan	✓	✓
Free trial	14 days	—
Deployment	Cloud, Desktop, Mobile	Cloud, Mobile, Browser extension
Platforms	Web, Windows, macOS, Linux, iOS, Android	Web, iOS, Android, Chrome extension
Integrations	4 integrations	5 integrations
Features Proton Mail 1/3 · GMX Mail 1/3
Custom domain	✓ (best)	Not checked yet
Email aliases	Not checked yet	✓ (best)
Ad-free inbox	Not checked yet	—
Specs
Mailbox storage	15 GB	Not checked yet
Attachment limit	Not checked yet	Not checked yet
Platform access	Not checked yet	Web_and_mobile
Our review
Pros	End-to-end encryption between Proton Mail users Tracker blocking, phishing protection, and suspicious-link confirmation Web, desktop, and mobile apps with migration tools	65 GB mailbox storage and attachments up to 50 MB Up to 10 aliases, plus spam and malware filtering Includes PGP encryption, cloud storage, and Online Office
Cons	The free plan includes only 1 GB of storage Only one encrypted email address is included on the free plan Custom domains and expanded aliases require paid plans	The free service is not ad-free Its broad toolset may be more than a basic email user needs Mail, cloud files, office tools, and calendar sit within the GMX ecosystem
Our verdict	Proton Mail is an encrypted email service for individuals, organizations, journalists, activists, and businesses. It combines end-to-end encryption for messages between Proton Mail users with zero-access encryption for stored messages and… Read the review →	GMX Mail is a free personal email service from 1&1 Mail & Media GmbH, aimed at people who want more than a basic inbox without paying for a mailbox. It offers up to 65 GB of storage, attachments up to 50 MB, and up to 10 email aliases.… Read the review →

Strengths and trade-offs

• Proton Mail — where it wins

  • End-to-end encryption between Proton Mail users
  • Tracker blocking, phishing protection, and suspicious-link confirmation
  • Web, desktop, and mobile apps with migration tools

  Where it doesn't

  • The free plan includes only 1 GB of storage
  • Only one encrypted email address is included on the free plan
  • Custom domains and expanded aliases require paid plans

• GMX Mail — where it wins

  • 65 GB mailbox storage and attachments up to 50 MB
  • Up to 10 aliases, plus spam and malware filtering
  • Includes PGP encryption, cloud storage, and Online Office

  Where it doesn't

  • The free service is not ad-free
  • Its broad toolset may be more than a basic email user needs
  • Mail, cloud files, office tools, and calendar sit within the GMX ecosystem

• Proton Mail9.0/10 · Free plan

  A privacy-focused email service with strong encryption, migration tools, and broad platform coverage.

  Visit Proton MailFull verdict →
• GMX Mail8.4/10 · Free plan

  A feature-rich free mailbox with generous storage and useful built-in tools.

  Visit GMX MailFull verdict →