A few years ago, rich media email was all the rage. Companies like Dynamics Direct, TMX Interactive, Audiobase, Mind Arrow, and Radical Mail were all touting their wares at big ticket conferences and opening branch offices around the country like a Seattle coffee franchise. I, myself, used to put on whole road shows dedicated to rich media email. But while rich media on web sites, banners, and floating ads grew in prominence over the last few years, rich media email seems to have just about faded from view. What happened?