Password-protected emails are messages that are secured with an additional layer of protection beyond standard email encryption. When sending a password-protected email, the sender assigns a password to the message, which must be entered by the recipient in order to access and read the contents of the encrypted email. This means that even if the email is intercepted during transmission, or accessed by unauthorized parties, they cannot view the content without the correct password.
Password protection adds an extra level of security, which is particularly useful when sending sensitive or confidential information via email.