Several times Exchange Server crashed or under maintenance due to which OST files gets deleted or inaccessible. To avoid such kind of situation, Users can take backup of OST data files to PST format. In this regard, Users can utilize most useful EmailsGuru OST to PST Converter software. This tool allows users to export OST data files to PST format including emails messages, attachments, notes, contacts, calendars, etc. It has capability to fix highly corrupted, damaged or orphaned OST files and convert them into PST format. It is fully supportable to all versions of Microsoft Outlook and Windows Operating Systems.