Not really with most versions - outlook 2007 offers redirect but I think its
only for Exchange mailboxes, not pop3. If your SMTP server allows mail to be
sent with a different from address, you can type any address in the from
field and send it if you use pop3 or imap.
Or you can forward it as an attachment. The recipient can reply to the
attached message or drag it to their inbox and delete your forward.