Released just last week was a new product by Zurb. The guys who brought us Foundation have released a brand new product, free of charge to help us with email structure for all device sizes http://zurb.com/ink/ A great service, fully documented. Take a look at the link above for more details. If you are not using this already, i'd advise and pulling down a copy and having a play. Possibly organise a meeting with your marketing team and get this worked into your weekly and monthly mailers. Huge thanks to Zurb!