eSoftTools MBOX to PST Converter is a very supported tool to export Thunderbird data files into PST file format. It gives an excellent opportunity "Auto Load" which automatically explores all Thunderbird files from the user's Local System. The software stores all folder structure, text formatting, meta properties, and HTML formatting. Apart from this, it allows users to convert multiple Thunderbird files into a single PST file. Here users can export large sizes TB files in PST file format without any hard effort.

For more info:- https://www.esofttools.com/mbox-converter.html