If you're seeking for a easiest solution to convert an OST file to PST format then I would suggest you to try the Free Online OST to PST Converter application. This reliable program converts OST files to PST format very easily and without altering the original folder structure or text layout. Additionally, this tool allows you to convert OST files to PST, MSG, MBOX, EML and other formats. With this useful approach, you can securely convert any large size OST files into PST file format. This OST to PST conversion tool works with all versions of Windows.

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