You are all so behind. This is ridiculous. I have a custom footer in my account, but my emails are still NOT responsive. I've tested them in Mail Chimp, My Emma and Campaign Monitor, and they are fine. I am getting ready to move ALL of my clients if this issue is not fixed immediately! Also, when are you going to enable REAL split testing? The other three do this so easily. Why have they all found it so easy to accomplish these necessary tasks?