I have been using the OST converter that is provided by the Ayush Tech Solution company this tool provided by this particular converter is known as ATS OST Converter. You can convert the OST files into multiple formats like EML,EMLX,vCal,vCard,PST and more formats are being supported by this converter also. This converter support all the version of the MS Outlook even the latest version is also supported by this tool and you can also very easily use this tool on all the versions of the MS Exchange Server. If you want to export the data to cloud based application like Office 365 and Live Exchange Server you can do that with the help of this tool. You can try the demo version to convert 30 emails for free.
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