I would like to suggest you the eSoftTools Thunderbird to Outlook Converter software. The tool comes up with many high-level specialties. It consensuses to convert bulk files at one time. This software is suitable to transfer the complete Mozilla Thunderbird to PST format without losing information. It can export Thunderbird files to multiple formats like NSF, MSG, EML, EMLX, HTML, Office 365, Gmail, and Yahoo. Users can also export the first 25 items Thunderbird to pst at free of cost by using its free demo pack editions.