MBOX file are supported by Thunderbird and many other email clients (Spice bird, Sea Monkey, Eudora and others) while Outlook supports for PST file format. To migrate from Thunderbird to Outlook there is need of professional MBOX to PST converter. There is lot of MBOX to PST converter software available but I would suggest opting for MBOX to PST converter software. Using this software I easily migrate from my Thunderbird mailbox to Outlook Mailbox. Tool worked well. Additionally you can also see preview of converted emails in demo version of tool available at: http://www.softmagnat.com/mbox-to-pst-converter.html
