  In certain circumstances, you can unsend a message. This makes the message disappear from the container to which you sent it.
 NoteBe aware that the message may have already been read.
You can't unsend a message that was:
• sent through the Internet or a gateway
• moved into a folder or deleted by the recipient
• sent to a user who does not allow you to unsend from his Mailbox.
To unsend a message, open it, then click Unsend. The message becomes editable, and an unsent flag is displayed beside the message in your Mailbox.
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