A confidentiality disclaimer is a statement that is typically included at the end of an email or other electronic correspondence, reminding the recipient that the information contained in the email is confidential and should not be shared with anyone else without the sender's permission.

The purpose of this disclaimer is to protect sensitive or confidential information from unauthorized disclosure or distribution. Many businesses, government organizations, and individuals handle sensitive information that must be kept confidential for various reasons, such as protecting trade secrets, complying with legal or regulatory requirements, or safeguarding personal information.

Using a confidentiality disclaimer in email correspondences can help ensure that confidential information is not distributed unintentionally. It serves as a warning to the recipient that they must take appropriate steps to safeguard the information contained in the email, such as deleting it after reading or storing it securely.

Moreover, the disclaimer also protects the sender by providing evidence that they took reasonable steps to protect their confidential information in the event that it is leaked or distributed without their consent. Without such a disclaimer, the sender may have a harder time proving that the information was confidential and that the recipient was not authorized to share it.