If you are looking for the best and reliable converter tool to export Thunderbird emails to Outlook then I would like to recommend MailsDaddy Thunderbird to Outlook Converter to you. It converts Thunderbird mailbox data to PST, EML, MSG, HTML, etc.
This converter tool supports Thunderbird MBOX and Maildir files and keeps all messages and folders in the same order during the whole conversion.
Thunderbird emails to Outlook migration tool is compatible with all Windows OS and provides a compatible PST file for all Outlook editions like 2019, 2016, etc.
The trial version of this accurate tool converts 20 emails from each mailbox without any modification.
Steps
Download Thunderbird emails to Outlook converter tool and runs on Windows OS
Click on Add/Browse file button and then Autoload to load the mailbox
Press the export button to go for bulk migration
Choose PST file format and conversion options single or separate PST file.
Save the destination and hit on the export button to start the migration
Final word
You can see this automated application is the easiest way to convert Thunderbird mailbox to Outlook. You can also migrate Thunderbird emails to EML, MSG by following the above steps.