The merging of multiple PST files can be accomplished via manual method or by using PST file merger software. so I will suggest you this PST Merge Software helps to combine the PST files. It's fast, handy, and very effective. You can try a free demo version of this software. Some of the key features of this software involve fast merging, multiple file merging, and the capability of merging both ANSI and UNICODE types of file, and more.
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