A September 2014 survey from Message Systems found that among those consumers (about 50%) who want to receive notifications from brands on sharing offers, deals and coupons email is the first choice. About 50% say they prefer email, and 20% text while 10% say they prefer social media.
So What? I believe that this reinforces the fact there is unique segmentation in the communication channel. Understand what channel is best for your customer.
What Now? It is important that you ask your customers how they want to be contacted and for which type of message. Over the years the preference has been changing so it is important to keep up to date to ensure your message is received and your response rate stays high.