2017 cyberattacks on Ukraine

Mimecast: The 5 Types of Email Encryption

Retrieved on: 
Thursday, May 19, 2022

Today, there are five main types of email encryption, which fall into two distinct categories.

Key Points: 
  • Today, there are five main types of email encryption, which fall into two distinct categories.
  • This constitutes the most affordable type of email encryption but is slightly less secure than end-to-end.
  • The most widely used and, arguably, the most important protocols in end-to-end encrypted email, PGP and S/MIME can be found within many email clients.
  • While STARTTLS can be a great baseline for email encryption, it is possible to add further layers of protection while messages are in transit.