Email marketing is the advertisement of a product, service, or brand through electronic mail. Email marketing can be used to improve the relationship between a business and its customers or to gain new customers. In order to gain the email addresses of potential customers, businesses must either pay a fee to an email broker, use a subscription service, or rely on referrals from existing customers. Many companies, of course, use a combination of these methods.

Email marketing works for a variety of reasons...

* It allows targeting
* It is data driven
* It drives direct sales
* It builds relationships, loyalty and trust
* It supports sales through other channels