InQuit OST to PST Converter is highly featured tool for doing the OST conversion. You can also resolve OST file corruption errors as well as a smart way to convert/export the offline and online emails data into various file formats such as PST, MSG, EML, EMLX, MBOX, vCard, vCal, Live Exchange and Office 365. This utility is very simple to use even a beginner easily operate it without any technical knowledge. You can also split the large sized PST files into small bits as per your need. You can also try the free demo version of the conversion to convert 30 emails for free.