One of the major reasons of PST corruption is the PST size limitation problem. Different versions of MS Outlook email client uses different character formats to write PST files, which determine their pre-defined size limit. Earlier versions of MS Outlook (Outlook 2002 and 2003) support ANSI character format and thus have a size limit of up to 2 GB. On the other hand, later versions of MS Outlook (Outlook 2007 and 2010) are based on Unicode character format and the size limit extends up to 10 GB. If these size limits are exceeded because of overloading of emails and other items of the user mailbox account, PST files may get corrupt. In such a situation, users have to search for ways to reduce the burden on PST files. Microsoft offers a free utility known as the Truncation Tool (PST2GB), which crops off the excess data from the PST file and brings down the size to 2GB. But the disadvantage of this tool is that important files and folders may get deleted in the process of reducing the size of PST file. An alternative to solve this problem is to split PST files and distribute the data contained in it to other equally or small sized files. To aid this process, users can opt for Kernel for PST split software, which can perform comprehensive splitting operation in the desired PST files. This software offers different criteria on the basis of which the splitting action can be performed. The parameters are “Split PST files based on date”, “Split PST files, based on email ID”, “Make single PST file for every folder”, “Extract selected folder into a PST file” and “Split PST file into multiple PST files”. This split PST files software can comprehensively slit al the folders and items present in a user mailbox account. Moreover, it preserves the metadata of the emails along with the data structure and properties of the mailbox items. Splitting PST files not only averts size limitation error but also makes the data more manageable and improves Outlook performance.