There are numerous programs available to merge multiple PST files. This Merge PST Tool is one of the greatest and most relevant pieces of software. This software efficiently merges numerous Outlook PST files. It is compatible with all versions of Windows and Microsoft Outlook, and users can add both ANSI and UNICODE characters. To combine, use the PST file type. In the combined method, it saves the data and maintains the folder hierarchy of PST files. There are no file size restrictions, and you can combine PST files of any size. Read More: https://www.softakensoftware.com/merge-outlook-pst.html