Transfer email from company server to public mail system

Hi, my collegue leaving the company. he is now using company email server, with 1000's mails in inbox/sent etc etc.

he want to transfer this mail to his laptop to read later using microsoft outlook/ or tansfer to a public free mail provider(google/yahoo ..),

how can we do it programatically using asp.net/vb.net

I have access to the compny mail server (ok relay allowed)

thanks in advanc

Do you really need to write a program to do this?

If no:
1) Just export the mail from Outlook.
2) Use ExMerge with Exchange (or similar).
3) Use the 3rd party import tool. Google has an IMAP import routine that will connect to your mail server and extract your email.

If yes, then it really depends on what software/version you are using for the Email server… but here are some generic approaches:
1) Again, for Exchange you could write a program to automate ExMerge. There are similar applications for other Email servers as well.
2) Create an application that connects to your mail server using IMAP/POP3, and extracts the email.