These are 140-character swipes at defining a key pointer in effective direct marketing.
Direct mail success is founded on four tactics. Take a look at these tips from RR Donnelley:
LIST 47 gems to leverage what you know about your customer. OFFER 46 ways to tailor the deal, and add the right incentive to respond now. FORMAT 56 secrets to deliver your message, and get a secure, accurate reply. COPY 57 ways to convert thoughts and feelings to action!