If you are looking for best and perfect solution to view the corrupted OST file mailbox data then MailsDaddy Free OST Viewer software is superb and exact solution. The OST Viewer Tool does not requires the installation of MS Outlook or Exchange Server for opening and viewing the Outlook OST file. It allows opening OST mailbox data with original folder structure. The software is totally supportive with all Windows OS and MS Outlook. MailsDaddy Free OST viewer software is available in 2 formats – Free Version and PRO Version. The free version allows only view and opening OST mailbox data and the PRO version is available for exporting OST mailbox data to PST, EML, MSG, RTF, HTML, and MHTML format. It also export Outlook contacts to VCF and Calendars to ICS format. The cost of the PRO version in only $49.