Outlook doesn’t support MBOX files directly, so you’ll need to convert MBOX to PST format first. The easiest way to do this is by using Advik MBOX to PST Converter.

Just follow these quick steps:

1. Install and run Advik MBOX to PST Converter.
2. Add your MBOX files or folders.
3. Select PST as the output format.
4. Choose where to save the file and click Convert.

That’s it! Now you can import the PST file into Outlook and access all your emails easily.