... reliable manual method available for the same.
Shoviv DBX to Outlook converter
The software is specially designed to ease the DBX to Outlook import (https://www.shoviv.com/dbx-to-pst-converter.html) task, and the software does this. It provides many advanced ... ... with just a single click.
For a better understanding of the software, a free version is also available.
For more info - DBX to PST Converter (https://www.shoviv.com/dbx-to-pst-converter.html)