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The most useful method to split a large PST file by size, year, or folder is to use a professional method. One such tool is the Softaken Outlook Split PST Software. It can easily split the PST files into a small file without any difficulty. This software allows users to split any size of PST file smoothly and maintain the original PST files after splitting. It is suitable for all Windows OS. All Microsoft Outlook version is supported by the software
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