By default, Thunderbird unable to export mail directly to Ms.Outlook.
Now you able to do that by using ImportExportTools extension to export folders as either .eml or mbox files.
Ms. Outlook doesn’t support dragging and dropping of .eml files but you could use Outlook Express as an intermediary, and then import them from Outlook Express into Outlook.
Below are the step:
1. After install ImportExportTools extension, export all the email in EML format

2. Import .eml folders into Outlook Express, by use your mouse to drag the selected .eml files to the Outlook Express folder.
Note: it is recommended to create a new folder in Outlook Express to import messages into.

3. Export all the email to Ms.Outlook





3. Finally, Ms.outlook success import all the email from Outlook Express.
