PST Split How to - Version 2.2 PST split how to - manage your Outlook PST using PST splitter software. One of the best product for splitting PST Outlook and it split the PST file by year, by year options you can split PST file year wise. From the long usage of Outlook, Outlook PST file got heavier and it make slow Outlook in use. For that point, you need to think about and then PST splitter software is the best choice for you to split the PST file into multiple PST. PST splitter software split Outlook PST file with all its email properties into different PST. Just go for demo first and split 50 Outlook items, this can help you in judging the product. After that it will be easy for you to purchase the full version in only $49 for personal license.