Thunderbird mailbox stores data in MBOX & Maildir file format while MS Outlook supports PST file format. To export Thunderbird data to Outlook PST format, we suggest MailsDaddy Thunderbird to Outlook Converter. This GUI software has multiple features that help technical or non-technical users to move data from Thunderbird to PST, EML, MSG, HTML, etc.
The software also maintains previous folder hierarchy, rich text formatting, inline images, attachment & other mail stuff in PST file format. You can also try the free demo edition first and export 20 emails from Thunderbird to Outlook in few easy clicks.