When you send an email to other Proton Mail users or when you receive a message from another Proton Mail user, the message body and the attachments are fully and automatically encrypted at every step. The only way to transform the message into its original format is to use a unique encryption key. Using complex algorithms, a message is transformed into an illegible string of characters. Our data centers are located at highly secure sites that require biometric access.Įncryption is a process of converting messages or information in such a way that only authorized parties can read it. Strong physical security: We've invested heavily in owning and controlling our own server hardware.Open source: All our apps are open source and independently audited, so anyone can check our code.But you can also send end-to-end encrypted messages to people on other email providers using Password-protected Emails or standard PGP encryption. Password-protected Emails: Messages between Proton Mail users are end-to-end encrypted automatically.As we don't have the key to access your data, we can't hand it over to third parties. Your data isn't accessible to anyone else - not even us. Zero access to your data: Only you have the key to decrypt your messages and files stored on our secure servers.Because your data is encrypted at all steps, the risk of message interception is largely eliminated.

End-to-end encryption: Messages between Proton Mail users are transmitted and stored on our secure servers in an encrypted format.The security of our users is one of our top priorities.

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