If you send a message and later decide you don’t want the recipient to get it, you can try to recall it, or take it back. If you and the recipient are using Exchange accounts, and the message hasn’t been read yet, you may be able to recall it and remove it from the other person’s inbox.
A dialog box opens, letting you choose how to recall the message.
Select a recall option.
You can select Delete unread copies of this message to delete the message from the other user’s inbox.
You can also replace the message with a different one by selecting the Delete unread copies and replace with a new message option.
Click OK.
Close the message.
If the recipient hasn’t read the message yet, it will be recalled. Whether or not the recall is successful, you’ll receive a verification email message, letting you know if it worked.