Microsoft Outlook OST PST - Version 3.01 If you Exchange Server meet the corruption range as yet you can't able to access your Exchange OST file. Then this Microsoft Outlook OST PST converter is most beneficial application for you. With this software you can easily recover Exchange OST file and convert into three advance formation such as Outlook PST, EML and MSG. The Microsoft Outlook OST PST converter has expertise in Microsoft Outlook OST PST conversion which easily converts entire OST file components into Outlook PST format. This software supports entire Exchange Server editions as yet perfectly works with all MS Outlook versions. You get Microsoft Outlook OST PST freeware tool which is free to convert 5 OST to PST items. To convert entire OST items you have to purchase full version of software. Full version of this advance application is available at only $99.