The simplest and perhaps most common element in an interactive e-mail is mouseover images—i.e. images that appear one way at first, but change when you move your cursor over them. Some companies will send images of their latest products to customers, which change to brief descriptions of those products when users mouse over them. Or if you product can be used in two different ways, has hidden features, or a dramatic before and after contrast, you could use mouseover images to highlight those things.
You could also use this feature to send your users a quiz. Ask an engaging question with a multiple choice answer. For instance, “Which appliance is the biggest consumer of energy in the home?” Then you’d include the choices, “Washer/Dryer, TV/Entertainment System, Refrigerator, Heating and Cooling,” each in its own dynamic image box beneath the question. When you mouse over the wrong choice, the box turns red. When you mouse over the right choice (heating and cooling, in case you were curious), the box turns green.
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