The problem associated with oversized files is basically its slow performance. In order to solve these problems there are many tool available on market but i want to recommend you this brilliant outlook pst splitter software which can easily split large PST file Outlook 2019, 2016, 2013, 2010, 2007 & 2003 including emails, calendars, contacts, etc. It works efficiently and is capable of splitting large Outlook PST files into smaller one without any file size limitation.

It comes with a user-friendly interface and allows the users to effectively and efficiently split all the items from the Outlook data files.

Visit here:- https://www.filesrecoverytools.com/split-pst-file.html

Which programme is Maintains data integrity of PST file and Saving after splitting PST file ?

To split large PST file of MS Outlook 2016, 2013, 2010, 2007 using Split PST Tool. It is the best and comprehensive solution with the help of which you can Break Large PST File into multiple PST files, without harming the original content of the main PST files. It undergoes deep scanning and gives out the new PST files without data alteration. It strongly supports the all versions of Microsoft Outlook and can install and run on any Windows-based operating system.

https://gallery.technet.microsoft.com/office/Split-PST-File-into-1d81cb14

If the size of PST file exceeds its limit then the PST file creates problem. Then there is only way to reduce this problem i.e. - to split the large PST file into small parts. Here I shared you the link: Manual tricks of PST split from where you will learn the 3 simple manual methods to break PST file into many PST files. This manual tricks gives the outstanding result and doesn’t damage the original data from PST file while splitting it to small PST parts.