If you want to export the entire Thunderbird mailbox data into Outlook PST format then use SysBud Thunderbird to Outlook converter. This is one of the best migration tool for Thunderbird to Outlook Migration. The software is able to attach multiple Thunderbird files into a single PST file as well as it preserves all internal folder structure and rich text formatting. Apart from this, it is able to export the large size of TB file into Outlook PST format. This single wizard application easily installed in all Outlook & Windows versions. Features of Thunderbird to Outlook Migration Tool:- 1:- Maintains folder structure & Html formatting, and metadata properties. 2:- Here bulk data migration is possible. 3:- Supports all Windows & Microsoft Outlook edition. 4:- Compatible to convert multiple Thunderbird files into single or separate PST files. 5:- Provides an Auto-Load button to load Thunderbird files automatically in the software for quick migration.