In Outlook 2003 and Exchange 2003, how do I recall an email message?
In order to recall a message, odds of recalling a message increase if the receiving user(s) is also be on Exchange. The odds of a successful recall are very small if you are trying to recall a message that is sent to an outside account such as gmail, hotmail, or yahoo.
1) In Outlook, click on the Sent Items folder and double-click the message you are trying to recall.
2) From the sent message, click on Action – Recall This Message.
3) You can choose to either recall any unread messages or to replace the message with another email.
4) The Exchange server will try and retrieve the message that you sent. If the e-mail is unread it will retrieve it and depending on the action you selected above will either remove the messaage and/or replace it. You will receieve a success or failure notification in your inbox.