The most-recommended software by most of the MVPs of Microsoft, i.e.,
Stellar Splitter for Outlook which I use personally as well. So this software has the major advantage where you can directly split any size data file easily with its interactive user interface and it
Splits PST files by Size, Date, Email ID, and Folders. Also Preserves the structure of original PST files after splitting and supports MS Outlook 2019, 2016, 2013, 2010, 2007 & 2003.
You need to follow the below-mentioned steps to split a single PST file:
• Start 'Stellar PST Splitter'
• Click the 'Split Single File' tab
• Click 'Select PST File' to browse the file directly from a known location or click 'Find PST File' to search for it in various drives
• Click 'Change Destination' to specify the location for saving the split file
• Click 'Split PST File' and select the criteria ('By Date', 'By Size', 'By Mail ID', or 'Select & Split') to split
• Choose a location for saving the software log report. After all this, the split PST file will be saved at the specified location.