Try the third-party tool vMail OST to PST Converter. It provides the best error-free conversion and also converts the various OST data files to PST, Office 365, Live Exchange Server with any intervention, and saves OST data to EML, MSG, and HTML formats. It recovers the permanently removed OST items and restores the unavailable data. it supports all versions of Outlook and Windows OS. It provides the free trial version which provides the ability to convert the first 30 items per folder.

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