e Chapter 17 e Writing a Killer Marketing Letter Just follow the formula s an aggressive marketer, you likely will have a lot of letters to write, be they long sales letters or simple cover letters or thank you notes. I have devised a simple, yet effective formula for generating these with clarity, ease, and impact. And you're about to have it. There is no guesswork when you follow this formula, which contains all of the essential components of a true marketing tool. Just follow the instructions to create a heavy-hitter every time. A The Formula