Hi David,
I also have small comment on this. Because normal notification emails are coming directly to my inbox without any special junk mail filtering (outlook default). But your winning notification (postal address request) email is going to the Junk folder. Coz, I have checked it with two local outlook settings and Windows Live Mail account (I used to forward email to windows live email and I configured my email account to outlook in office and home, that is why I detected it). But when I check email headers, I can’t see any difference. Any idea? 