What is Encrypted Email
When emails are encrypted, the contents of the emails are scrambled so that only the intended recipient can access them.
Here's how email encryption typically works:
- A message is encrypted, or transformed from plain text into unreadable ciphertext, either on the sender's machine, or by a central server while the message is in transit.
- The message remains in ciphertext while it's in transit in order to protect it from being read in case the message is intercepted.
- Once the message is received by the recipient, the message is transformed back into readable plain text in one of two ways:
- The recipient's machine uses a key to decrypt the message; or
- a central server decrypts the message on behalf of the recipient, after validating the recipient's identity.