Combine Multiple Outlook Files - Version 3.0 How to combine multiple Outlook PST files? Many queries of this type are searched by many users so we developed new software called as PST Merge. PST Merge combines multiple PST Files instantly. This Software also has the option of Remove duplicates so when you combine multiple PST Files. Combine Multiple Outlook PST Files are now easy. This shareware supports all the PST version of Outlook. So when you want to combine multiple PST files of different version then it will completely merge or combine multiple Outlook PST files. If you want to combine multiple PST files in bulk then you can purchase this Software only in $ 69 for personal key and $199 for business key. As this shareware or you can say demo version has limited features so you can go for the full version of this software and if user face any type of issue then they can opt for the technical support team to combine multiple outlook PST files.