Outlook Express to MS Outlook Utility - Version 3.4 Use of Outlook express to MS Outlook utility - Outlook Express is the FREE Email Client of Windows OS (98 to XP). Using it, all users can simply receive, send email messages etc. The Outlook Express Application store all emails, contacts, email attachments in DBX & EML file extension: You can see below - C:\Documents and Settings\[username]\Local Settings\Application Data\Identities\{…}\Microsoft\Outlook ExpressNow, you want to use Advance version of Windows OS like Windows 7 or 8. In these OS, DBX file does not work. So, you should take Outlook express to MS Outlook utility, which solve your all problem. Users can convert Outlook express files to Outlook PST, MSG, RTF and also EML files. After getting EML file, you can export EML files in different application:* Import into Windows Live mail (Windows 8, 7 & Vista OS support Windows Mail and it is free Email Client), * Import into Thunderbird* Import into Novell GroupWise