Use the InQuit OST Converter as this tool has the one of the advanced features and this tool also different types of the features that have the features that can do the recovery and conversion of the OST files in the best possible manner. InQuit OST to PST Converter users will help you to Repair, Recover, & Convert OST file to PST, as well as EML, EMLX, MSG, HTML, vCal, vCard and also have the other file format.
It is the most recommended software by every exchange and Outlook user because of its clean and easy to use GUI. You can try its demo version that similarly works as its full version. Demo version is able to Convert OST files with selective 30 items from per mailbox to PST free of cost.