This document discusses email marketing as a low-cost and environmentally friendly way for companies to reach thousands of subscribers instantly with sales, deals, and information. It provides examples of large companies like Gamestop and Sports Authority that use weekly email ads to promote products. The document also suggests how Athlete Trax could use email marketing to automatically update college club sports subscribers and target parents of youth sports about important events, at a cost of $30-150 per month depending on the number of emails and design template.