Saving mail to different contact.

Saving mail to different contact.

Think I may have asked this before, but is it possible to save and email to a contact that is not the sender or the receipient?  For example saving a Paypal payment receipt that comes from Paypal, to the contact that made the payment.  This should be pretty basic, but I think the answer came back last time that it was not possible...or maybe I dreamed it...