There are many tools to convert OST files into PST file but best one is eSoftTools OST to PST ConverterSoftware. It allows the users to convert their files in other file formats as well like Office365, HTML, EML, EMLX, vCard, MBOX, MSG, etc. This software also helps to recover corrupted OST files, split PST files, filter OST e-mail items and many more. The application builder also offers a free demo version to their clients so that they can save 50 files from every folder and along with that they get to know about the working of the software in detail.
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