Proton Mail is protected by multiple layers of security and trusted by journalists, security experts, and millions of people around the world.
Strong encryption at all times
With Proton Mail, emails are encrypted at all times, so we can never access your messages. The content of your emails is encrypted on your device before being sent to our servers, meaning only you and your intended recipient can decrypt it.
You can also use our Password-protected Emails feature to quickly send end-to-end encrypted emails to any email address, not just Proton Mail accounts.
This lets you add and organize all your contacts' details in one convenient location while knowing that no one, not even Proton, can access that information but you.
Simply select a password in the composer before you click send, and your email will be inaccessible to both Proton and your recipient’s email provider.
This technology works for emails sent to other Proton Mail accounts and Password-protected Emails sent to non-Proton Mail email addresses.
Enhanced tracking protection
Proton Mail’s zero-access architecture means we can never access your emails. Emails from other service providers are instantly encrypted on our servers using your public key, meaning we do not have the technical ability to decrypt your messages.
As a result, we cannot hand your emails over to anyone.
Open source and independently audited for transparency
Every app you use to access your Proton Mail inbox is available for inspection. Open sourcing our code increases the security of our apps because it allows us to leverage the global security community to search for vulnerabilities.
All Proton Mail code has been independently audited by third-party security experts. The results of those audits are publicly available on our website.
Built-in PGP support
Address verification and key pinning
Get your encrypted inbox with Proton Mail
Unique defenses against attacks
Better security through privacy
Based in Switzerland
Proton Mail is based in Switzerland, which means all user data is protected by some of the world’s strictest privacy laws.
Switzerland is politically neutral and is not a party to any foreign intelligence-sharing surveillance networks. Due to the encryption we use, we do not have access to your inbox, and we only respond to official requests from Swiss authorities, which are subject to strong Swiss privacy laws.
Connecting to Proton Mail over Tor helps prevent anyone monitoring your network from knowing you are using Proton Mail and provides access to your encrypted email account even if Proton Mail is blocked by your government.
Alternative routing is another of our anti-censorship features that help ensure you can always access your email. If your connection is being blocked, Proton Mail apps will automatically seek alternative paths to establish a connection with our servers.