MailsDaddy free OST Viewer - Version 2.0 Free OST file viewer software used to open and read the damaged or offline OST file data easily without loss of any content. The user can open the offline OST file using Exchange Server and also the Outlook but after using this software the user can read damaged or orphaned OST files without Exchange Server or the Outlook installation. Using this tool the user can see OST file data without using their MAPI profile. The software contains all the elements as in healthy OST files like contacts, calendars, journals, Emails, tasks, etc. If you upgrade the software then you get other features like conversion of OST file to another file format like EML, MHTML, MSG, etc. The tool also maintains the folder structure so the user can easily access their content. The tool support every version of Windows.