In case you didn’t see this already, we put a couple of HTML mailers in the system a few days ago. To see what they look like I’ve included the links below. Of course, if you want to use these you have to login to you account to get it with your tracking code embedded. Enjoy 
AusVegas General : http://www.incomeaccess.com/reporting/creative_display.asp?bannerid=2338
AusVegas Slots:
http://www.incomeaccess.com/reporting/creative_display.asp?bannerid=2337