One of the best-recommended ways to merge PST file is using this third-party software. The software easily combines multiple PST data in one single PST file, deleting all duplicate and junk items from the file itself. Additionally, it offers you with other important feature to manage PST file. So here I want you to get assistance by this amazing PST Merge tool. It can merge any size of PST file and join password-protected PST file. The tool supports all editions of MS Outlook and Windows. You can also try the free trial version of this software.
You can visit here for more information:-Merge Outlook PST Files