I would recommend you attempt our most famous pst splitter full version Tool to execute the quick splitting of selected PST files within no time. The pst splitter crack software can securely break the Outlook PST files like emails, contacts, tasks, calendars, and other files in just one click.
Launch KDETools for OST to PST Software free DEMO.
Browse the .ost File.
Open Batch Conversion option to add File/folder.
Select Open & Export from the left pane to add PST file format.
Click on the split option.
Click on the Messages Filters option.
Continue Import & Export Process.
More info- https://www.kdetools.com/ost/