I have a problem with my outlook. in this my mails are getting deleted after 3 months. I am not able to get back those if i required. by this i am loosing some important emails in outlook. How can i get back those mails.
Outlook has a function called 'auto archive'. You can use this to move 3 month old mails to an archive folder before they are deleted.
If this is already turned on and the archive folder is not connected in your list of mailboxes then this might also be what is causing your mails to go missing. In which case it will be easily rectified on most outlooks installas via 'file' 'open' outlook datafile' (browse to file). Iutlook 2012 seems to lack this option and forces you do to the same thing via the control panel.