If your pst files got oversized because the file size limitation in Outlook is serious matter and you should divide them into small party as soon as possible otherwise it causes serious trouble related to performance of MS outlook. In this situation I would like to recommend you this brilliant
outlook pst splitter software that helps the users to avoids large PST corruption by dividing and categorizing them in smaller files.
It uses its own PST splitter to avoid the risk of corruption of PST files due to the issue of being over-sized. It is fully capable of splitting all MS outlook item such as folders, contacts, calendars, journals, email folders. It avoids corruption in PST files and divides large-sized PST files into smaller files. It has wide range of advanced and well developed features to add more accuracy and efficiency in this software. It provide brilliant enhanced user friendly interface to make this process fast and simple. You should use it free demo version first to understand it features and functions.