OST File - Version 3.7 Overview of OST File: OST and PST File is part of MS Outlook, OST is Off-line Storage files, which remains emails copy and exist on client machine but PST is Personal Storage Files, which remains emails and their items and readable file format in MS Outlook but OST file is unreadable file format. This Offline Storage files help Outlook user to easily recover email from exchange server database as PST file format, which is easily open in MS Outlook. Offline Storage files do not open in Microsoft Outlook, so that conversion (OST to PST tool) is necessary for user. OST Repairs Software is the secure technique to repair or recover OST file from Exchange Server. Free Download Demo Version of the software analyzes the process, if user wants to purchase after satisfaction of Demo Edition then pay only 99 USD. More information about OST files on-: http://www.ostfile.co.uk/