Hi,I am about to launch a website in which we offer various sort of deals on products. We wanted to have a feature where we can message our subscribers the daily deal on their mobile. Since we need to ask for their mobile number on the registration form, I wanted to ask whether we can message them if they are on the DND list? Also how can I find out if they are on the DND list.The other day I enabled facebook mobile and even though I am on the DND list I was able to receive messages from them. Is it a legal practice or an illegal one?Any help is much appreciated.