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This means the provider holds the encryption keys, which it can use to access your emails for advertising purposes or in response to third-party demands. Most email services apply this encryption when an email is stored on its servers.

They use symmetric-key encryption algorithms such as AES (new window) to store emails.

This is the same encryption used to secure HTTPS websites, and it is the backbone of all security on the internet.

They use TLS/SSL encryption in transit.

Most modern email services encrypt emails in two ways: In this article, we explain the different types of encryption that most email services use to protect your messages and what Proton Mail does to add an extra layer of security and privacy. This is more difficult than it first appears, as email was invented and widely adopted in the early days of the internet before many of today’s security best practises were developed.Īs with all digital content, the best way to keep emails secure is by using encryption - complex algorithms that prevent anyone from reading the content unless they have the correct encryption keys.

It is therefore vital to keep your inbox and messages secure. Last update on NovemPublished on December 30, 2021įrom holiday photos to our purchasing history to personal correspondences, our emails contain a great deal of sensitive information.