eMail Marketing is a form of direct marketing which uses electronic mail as a means of communicating commercial or fund-raising messages to an audience. In its broadest sense, every email sent to a potential or current customer could be considered email marketing. However, the term is usually used to refer to:
* sending email messages with the purpose of enhancing the relationship of a merchant with its current or previous customers, to encourage customer loyalty and repeat business,
* sending email messages with the purpose of acquiring new customers or convincing current customers to purchase something immediately,
* adding advertisements to email messages sent by other companies to their customers, and
* sending email messages over the Internet, as email did and does exist outside the Internet (e.g., network email and FIDO).