One of way in this situation,this is-
viewer outlook,to my mind this way is good,because tool helped me and some my friends too,it is free as far as I remember,moreover program can help, when your mailbox is not accessible, it can happen, when something is wrong with your corporate mail server,is able ensure full compatibility with this platform, it represents one of the most popular programs for mail processing,restore all messages, contacts, tasks and calendars cannot be stored on client PC due to security reasons,pst viewer Microsoft and Outlook email viewer features a powerful algorithm, that decrypts *.ost format and extracts your data as a set of files in *.eml, *.txt and *.vcf formats,also convert your data to a *.pst file, that can be easily opened by any email client, you can even forward this file, recovered with Microsoft Outlook .pst viewer to any other PC within your local network.