Basically, when customer chooses General Inquiry display alias, then the email subject prefix will be [General Inquiry]; if chooses Sales, then [Sales], etc. I believe the contact form in Drupal has this feature, very handy.

I asked this question in another forum and was suggested to post here: http://www.mojoportal.com/Forums/Thread.aspx?thread=6742&mid=34&pageid=5&ItemID=5