Split Large Sized PST Files
If you want to break large the PST items in small parts, Here I recommend you try the Split PST Tool that can easily split large PST items according to date, year, size and folder option without installing MS-Outlook in your system. It split both ANSI and UNICODE formats. It supports all windows and Outlook versions.
Visit here for more info: https://www.osttopstapp.com/split-pst.html
If some MS-Outlook user has slow speed and there is no space, we suggest you try Outlook PST Splitter. This software is an advanced tool that helps users to easily divide large PST files into smaller PST files by date, size, year, and folder according to their needs. It works without risk and is compatible with all versions of Windows and Outlook. This software destroys large PST files without data loss, or we can say that it is a safe conversion. This software splits the PST file into ANSI and UNICODE formats. you can download this software from here: -Split Oversized Outlook PST Files