For a much longer time than any of us have been alive, companies have been advertising through postal services. Once the Internet gained popularity, e-mail followed suit, and we've all been hammered by spam e-mail at one point or another. Most of the time, it's for a product or service you absolutely don't care for, and you wonder why they would even send you the e-mail! That's precisely the feeling you should remember when approaching any e-mail marketing campaign. You never want to spam, and you want to send your advertisements to an interested audience.