One of the exciting possibilities of interactive email is games. Kristian Robinson of Two built two really cool versions of Sonic the Hedgehog games that you can play within an email. I was blown away with the slick execution of both
Although VML is widely used in Microsoft Outlook 2007-2016, background image support has been elusive in the new Windows 10 Mail.
Marshall Gerz found a method of implementing VML that allowed for background images to work in both Outlook and Windows 10 Mail.