Use the BLR MBOX Converter Software to import MBOX files into Hotmail. Without the assistance of Thunderbird or any other application, the program may upload MBOX files straight to Hotmail. It can import many MBOX files together. To transfer certain emails from an MBOX file according to a date range, the program offers a number of sophisticated filter options.

How to add MBOX files to Hotmail

Launch this program on your computer.
Include an MBOX file in the program.
Select IMAP after clicking on Export.
Enter the login credentials for your Hotmail account.
Press the "Save" button to start the import process.

To Collect Yet Deeper Knowledge: https://www.blrtools.com/mbox-exporter-tool.html