If you receive an email from someone that you really wish didn’t have your email address, you can make them think that they don’t. By using the Bounce functionality that is included in the OS X mail client to fool the pest into thinking that their email did not reach the intended goal. The sender will receive a notification that the email was not delivered because the addresses had permanent fatal errors and the user is unknown.
To Bounce a message from the Inbox:
1. Right-click the desired message.
2. Select Bounce from the menu.
The message will disappear from the Inbox.
To Bounce a message from the Message Window:
1. If you are viewing the trouble email, go to the Menu and select Message
2. Select Bounce.