Mail Folders Missing

Hello this is Akhtar Qureshi, I am using em client, unfortunately all my folders are missing, i have the backup of mail_dat.dat. it is possible to get back my data from this file. My email id

Hi Akhtar, unfortunately it is not possible to restore your data from the selected file. Are you using an IMAP account?
To keep a backup of your data, please make sure you create a complete backup using the backup feature.

Thank you,