Ops I have sent the wrong email to wrong person. I know you have done the same thing and vish you could have bring back the sent email.
Acctually it is not impossible but you cannot do it in every Email Services or Softwares Related to Sending emails. It is only possible in Outlook. Not even in outlook express.
Hot to do it (Simple) Outlook 2003
1. Go to "Sent Items" Folder.
2. Open the email you want to recall
3. Go to "Action" in menu
4. Click "Recall This Message..."
5. It will give you two options
1. Just to delete the message
2. Delete and replace the messege
6. Click "Ok"
However you can do this only if they have not read it. Otherwise, there is no point. of doing this.
Also it will show that there was a message been deleted. So you better have a good excuse.