MacSonik PST Splitter for Mac is a capable application that allows users to divide or split large PST files on a Mac machine. This utility allows you to split or cut Outlook PST files into different categories, such as Split PST by size, date, sender email, and so on. Mac PST Splitter can split single and multiple PST files with full data.

I would recommend you to use the DRS Split PST Tool to easily split large PST files into smaller parts. This tool helps can easily split PST files of any size while keeping data integrity intact. It also enables adding passwords to the resultant file after the splitting process. The PST splitter helps to reduce PST file size according to size, date, sender, and folder.