Anyway, if you want to convert MBOX emails to PST format, you should use the most reliable solution, Cigati MBOX to PST Converter. It is the easiest and safest way to convert MBOX to PST with email attachments. It only takes a few simple steps to export whole MBOX files to PST format.

There are 3 steps required to perform the migration of MBOX to PST file format:

1. Download MBOX to PST Converter tool and install.
2. Select MBOX files or folders.
3. Specify the desired storage location.
4. Click the Convert button.

For More Info: https://www.techietruck.com/convert-pst-to-mbox-file/