Split PST files independently

Split PST is a user-friendly application that enables users to split PST files independently.so I would like to recommend the PST Splitter tool, which comfortably splits any large PST file into smaller parts while ensuring data safety.You can use this utility to split PST files in Outlook 2019, 2016, 2013, 2010 without data loss and security issues.
Method

Open MS Outlook. ...
Go to account settings.
From Data File tab click on Add button.
Enter Outlook data file and click on OK.
New PST file will be opened.
Go to file click on open & export and then on import / export.

Read more :- osttopstapp/split-pst.html