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If anyone wants to split PST files in UNICODE Version then I would suggest trying the KDETools PST Splitter. This tool easily breaks oversized PST files both in ANSI and also UNICODE formats. It divide PST items without installing MS-Outlook based on date, size, year and folder. It is easily capable of all Version.

Visit Here: Split PST Tool to Divide/Split Large Outlook PST File into Smaller Parts

 

Cigati Outlook PST Splitter autodetects the file in ANSI and UNICODE and supports any size of PST files. It effortlessly Splits the large PST files into smaller Outlook PST files in a safe mode. It allows the Users to create a single PST file or even separate Outlook PST after splitting files.