Learn how to write a sample letter to sell a product with our stepbystep guide, including a template, example and tips. A sales letter is a form of direct marketing that's designed to attract potential customers to your product or service.This article guides on creating compelling sales proposals, detailing key elements like executive summaries, product benefits, and company information. In the sales letter's body, make sure to include relevant information. This document provides information about sales letters used to notify customers of new products. Check out these Cold Email Template About New Product Launch 7 Unique and Effective Email Templates to reach potential customers. Use the sales letter template below, to begin mapping out your sales letter. Get a high-converting sales letter in 3 weeks or less without having to write it yourself or hire a poopy-head copywriter who'll promise you the world. Sales letters require certain elements that help convince a customer to invest in a product or service. Identify your target client's problem and provide them with a useful solution.