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/