15.3.2 Pulling back sent Items
If it is necessary to revise an Item that has been sent, it might be possible to pull back the Item. You can pull back an Item only while it is still in the send destination's Inbox.
From the list of Items in the Outbox window, select the check box next to the send date of the Item that you wish to pull back, and then click the Pullback button. The Item is returned to you from the recipient's Inbox. The status of a pulled-back Item is reset to its status when you received it. Just as with Items saved during creation, you can revise the Item and resend it.