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If you need to export Thunderbird files to Outlook along with whole mailbox items then you can take help of most promising ZOOK Thunderbird to Outlook Converter tool. It is renowned when it comes to import Thunderbird emails to Outlook with an attachments. The software is designed or developed by to IT professionals so users can rely at this. It is capable to recover highly corrupted or damaged Thunderbird file into Outlook 2019, 2016, 2013, 2010 and all earlier versions. Users can also download trial version to evaluate the features and export few number of items from Thunderbird to Outlook.

For more info- https://www.zooksoftware.com/thunderbird-to-outlook/