There are many solutions to split large PST files into small pieces with manually in Outlook. KDETools PST Splitter is the best and advanced Software that helps we can easily split large PST files manually in any version of Outlook and Windows. It works both in all Version of Windows and Outlook. Split PST files in MS-Outlook based on date, size, year and folder. It breaks large PST files in ANSI and also UNICODE formats. Support without installing of MS-Outlook. Split large PST without damaging any data. Split oversized PST files selected specific date ranges. Free Version also available.
More Info: https://www.kdetools.com/pst-splitter/
To split PST file, many solutions are available but one should choose safe solution therefore I would like to recommend Softaken Split PST Tool that comfortably split any large PST file into smaller parts with 100% data safety. Moreover, the software works without installing Outlook. You can split any large PST file based on size, year, and folder in a few minutes with this application.