I would recommend this excellent eSoftTools Thunderbird to Outlook Converter software if you require an easy way to convert Thunderbird to PST. Without using Outlook, it is possible to convert one or multiple Thunderbird mbox files into pst format. It enables you to save Thunderbird Thunderbird mbox files in single or many pst files.
Read More:- Convert Thunderbird to PST files
If you want to move all of your MBOX file data into an Outlook environment, try the development SysInspire MBOX to PST Converter Software. This application simply moves all of the data from the MBOX file to a PST file, which is an MS Outlook file format. This tool is also useful for clients who need to move their MBOX files from email client applications such as AppleMail, OperaMail, Sylpheed, Entourage, Thunderbird, Eudora, Spicebird, and so on into Outlook PST files. If your MBOX file has become corrupted, you can also remove the errors and save the recovered data in EML, MSG, RTF, and HTML formats.
Read More:- Convert MBOX to PST