<A target="_blank" href="http://rosshawkins.net/archive/2010/07/21/it-happens-a-lot-notes-8-client-running-with-a.aspx">Ross Hawkins knows there are reasons why someone might be using the 8 client</A> with a 7 mail template and thinks most of them are pretty bad. The mix of new client and old template can cause a lot of user dissatisfaction.