Thunderbird mailbox does not provides any email in PST file format therefore user need a solution to export mailbox into Outlook.
We highly recommend user to download MailsDaddy Thunderbird to Outlook Converter tool. This single program has several features and conversion options that allows user to move single or multiple Thunderbird mailbox to Outlook at once. The application has several features like preview, email filter, selective folder conversion etc. User can install the solution on all Windows OS and open emails in PST file format
Read more: Thunderbird to Outlook Thunderbird to PST Converter