If by “Default” you mean the way there email works:
• Open Outlook.
• Click Tools -> Options.
• Click the Mail Format tab
• Click Stationary and Fonts.
• Click Theme.
• Select No Theme.
According to Microsoft (http://support.microsoft.com/kb/822005) the appearance of your documents (email in this case) is controlled by templates. The default template for Outlook 2007 is normal.dot. Replacing this file with a clean copy will restore it to normal, should it become corrupted.
As for the user’s Outlook profile as a whole, thus far deleting it may be the only way to clean up a profile. Make sure you follow good backup procedures before doing this. First delete the profile on the users computer. Then, create a new Outlook profile from them. As long as the profile in Exchange was not removed, Exchange and Outlook will re-sync the users data.
Class: Information Worker: Outlook 2007 Power User*
Date: November 12, 2008
Location: Indiana State University
*The Information Worker series is available through LanTech Training in Indianapolis. Please visit their website for more information