Which of the following is not a good security practice for email?

Including a legally-binding confidentiality notice is not considered a good security practice for email because such notices do not provide any actual security measures to protect sensitive information. While they may serve as a deterrent to unauthorized sharing or misuse of information, they do not prevent data breaches or unauthorized access to the email content.

In contrast, sending sensitive information in encrypted messages, using secure passwords for email accounts, and limiting the sharing of sensitive information via email are all proactive security measures that help protect data integrity and confidentiality. These practices involve technical safeguards and behavioral protocols that reduce the risk of unauthorized access and enhance overall security.