You can't if this is not within the same Exchange environment.
If you are, double click to open the message from your Sent Items folder and
choose (Other) Actions-> Recall this message
--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
http://www.msoutlook.info/
Real World Questions, Real World Answers
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"Dawnyb" <(E-Mail Removed)> wrote in message
news:3E4595E3-6BD2-46FC-9528-(E-Mail Removed)...
> If I sent an email to someone and i know they havent yet read it, and I
> want
> to retract it how do i do that?