Privacy comparison · 2026
Proton Mail vs Gmail
Proton Mail and Gmail are often weighed against each other. This side-by-side compares how each protects you by default, whether the code can be inspected, who runs it, and how to pick the more private option.
Side by side
| Proton Mail | Gmail | |
|---|---|---|
| Type | Email provider | Email provider |
| Default protection | Zero-access encryption; end-to-end between Proton users | Encrypted in transit/at rest, not end-to-end |
| Open source | Yes | No |
| Operator | Proton AG | |
| Jurisdiction | Switzerland | United States (Google) |
| Cost | Free tier + paid plans | Free tier + paid (Workspace) |
Proton Mail
Proton Mail encrypts your mailbox with zero-access encryption, meaning Proton cannot read your stored messages, and offers end-to-end encryption between Proton users and to others via password-protected messages. Its apps are open source and it operates under Swiss privacy law.
Privacy strengths
- ✓Zero-access encryption — Proton cannot read your stored inbox
- ✓End-to-end encryption between Proton users and via protected messages
- ✓Open-source apps, operated under Swiss privacy law
Caveats
- !Mail to non-Proton users isn’t end-to-end unless you use password protection
- !Free tier has storage and feature limits
Gmail
Gmail encrypts mail in transit (where supported) and at rest on Google’s servers, but it is not end-to-end encrypted, so Google can access message content. It integrates deeply with Google’s services and account.
Privacy strengths
- ✓Reliable, huge storage and deep integration with Google apps
- ✓Strong spam filtering and account security options
Caveats
- !Not end-to-end encrypted — Google can access message content
- !Tied to your Google account and ecosystem
- !Closed source
Frequently asked questions
What is the difference between Proton Mail and Gmail?
Proton Mail: Proton Mail is a Swiss-based email service with zero-access, end-to-end encryption so the provider cannot read your stored mail. Gmail: Gmail is Google’s email service, encrypted in transit and at rest but readable by Google and used within its wider ecosystem.
Which is more private by default, Proton Mail or Gmail?
Proton Mail — Zero-access encryption; end-to-end between Proton users. Gmail — Encrypted in transit/at rest, not end-to-end. Choose based on which default matches how you use it.
Are Proton Mail and Gmail open source?
Proton Mail: yes, open source. Gmail: no, closed source.
Can Proton Mail read my emails?
No. Proton Mail uses zero-access encryption on your stored mailbox, so Proton itself cannot read your stored messages.
Is Gmail end-to-end encrypted?
No. Gmail encrypts mail in transit and at rest but not end-to-end, so Google can technically access your message content. Encrypted providers like Proton Mail or Tuta keep the provider out.
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