thank you for the response!
sadly the one I am helping uses pop mail and all mail for the last 5+ years (2.000+ emails in the outbox) are all saved locally on his laptop. the host service he uses for email (a local ISP) only saves somwhere around 20mb of e-mails on their servers, about 200-300 e-mails sync automatically when looging inn to the e-mail on his new machine.
well think I might have to break the news to the guy that other than saving all 2.000 email individually there is nothing that would take a reasonable amount of time I can do.
THANK YOU ALL for the help :)