Thanks for responding Deltamac, but I have already gone through a few results from the simple search. All of them require an exchange or an IMAP account in which the emails reside on web server. My email account was configured as POP because I do not get too much storage on webmail. So, all my emails are downloaded onto computer and am unable to move them from thunderbird to outlook as it is. The second option you provided is paid one, I wish to explore possibilities before going paid application route. Is there any manual method like dragging and dropping emails from thunderbird to outlook?