Read our STARTTLS vs SSL vs TLS blog post for more details on the email encryption in transit. However, in this case, if the recipient’s server is not compatible and the secure connection can’t be established, data transition will happen anyway, but via an unencrypted channel. With Explicit, or Opportunistic, SSL/TLS, a sender’s server also sends a request to a recipient’s server for establishing a secure connection.

This means that the email won’t be sent at all. If the recipient’s server doesn’t support TLS and the exchange of the encrypted keys can’t be performed, data transition won’t be allowed. With Implicit, or Forced, SSL/TLS, a sender’s server sends a request to a recipient’s server for establishing a secure connection.Another thing to remember is the dependency on ports - port 465 is mainly used for Implicit SSL/TLS, while 587 is more common for Explicit SSL/TLS. To enable STARTTLS for your email client or server, you usually need to set the proper configuration in its settings. It is compatible with SMTP and IMAP protocols. It is a command that instructs the email server to switch to a secure connection via TLS or SSL (SSL, Secure Socket Layer, is a TLS predecessor). To establish TLS secure connection, STARTTLS is used. How does it work and how do you enable it? This way, the email content becomes insecure as soon as it reaches the recipient. Why do we say that this is just a basic encryption? Because TLS secures the message transition channel, not the email itself. It is a reliable method used by default in many email clients, such as Gmail and Yahoo. TLS stands for Transport Layer Security and, as its name suggests, it protects emails during transportation from a sender to a receiver. End-to-end email encryption, or public key encryption (which is obviously a more advanced option).Encryption in transit (you probably know it as TLS/SSL/STARTTLS).There are two common email encryption methods: How email encryption worksĮncryption is a method to cipher your message and its content in a way that it can’t be interpreted by unintended recipients. In this article, we explain several types of encryption, from basic to advanced ones, and also provide instructions on how to implement them. Email encryption is something that everyone should know about, whether you are using email communication for your personal purposes or transferring sensitive information within an enterprise organization.

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