How to recover emails from dbt files?

What is dbt file? How can i recover emails from such files?

dbt files are the temporary file created for dbx files. If for due to any reason Microsoft Outlook Express crashes and you cannot find a required dbx file or recover an important email from the dbx file, then try and locate dbt files on your local hard disk using Windows Search, rename their extensions to .dbx and then recover emails in them using Disk Doctors Outlook Express Email Recovery (.dbx).