This document provides guidance on writing persuasive messages. It discusses what types of documents are persuasive, including requests, proposals, letters, and reports recommending action. The primary purpose of persuasive messages is to have the reader act by providing enough information for them to know what to do and overcome any objections. Additional purposes include building a good image and relationship with the reader. The document recommends starting direct requests with the request and problem-solving messages with the shared problem. It also provides tips on organizing, tone, credibility, and motivating the reader to act promptly.