To convert Thunderbird to PST file, download the most excellent software called as eSoftTools Thunderbird to Outlook converter tool. It will give you the option of manually or automatically selecting the Thunderbird file for conversion. It can convert individual Thunderbird files to PST and convert Thunderbird emails to PST files. It also performs it simple to convert Thunderbird to Outlook files. It can give a free trial in which users can convert Thunderbird's initial 25 items to a PST file.
For more info:- Convert Thunderbird to PST file