While emailers sounded like a good idea several years ago, they are now little better then spam. Most of the work I get is not appropriate to any need I might possibly have, and lots of it just isn’t good at all. Plus, if the image isn’t displaying in my email window and fast, I’m on to the next one. On the other hand, when I receive a printed promo, at the very least, I look at the image(s). I also notice your attention to detail in your paper and design choice. Most often, email promos feel templated and generic, hence the agency opt-outs.