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You can forward individual e-mails from within the the mail app, but you can't set the Touch to automatically forward mail, if that's what you mean.
 
When you have an e-mail open (reading it), there is a 'reply' action button at the bottom of the screen (a curved arrow pointing 'back'). Touch it, and you get a choice of 'Reply', 'Reply All', or 'Forward'.
 
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