Recall an Email Sent by Mistake in Outlook 2010

1. Locate the message you wish to retract in the Sent Items folder. 
2. Double-click the message to open it. 
3. Click the Actions button located in the Move section of the ribbon.
4. From the menu, choose Recall This Message. Outlook opens the Recall This Message dialog box. 
5. Select Delete unread copies of this message option or the Delete unread copies and replace with a new message option, then click OK. 
6. You will get a response that the message has been recalled if the process was successful.