Email marketing is directly advertising a commercial message to a group of people using email. In its largest sense, each email sent to a potential or existing client could be considered email marketing. It typically involves using email to send ads, request business, or solicit sales or contributions, and is meant to build loyalty, confidence, or brand awareness.
Email marketing can be done to either sold lists or a existing customer database. Generally, the term is usually used to refer to directing email messages with the purpose of enhancing the connection of a merchant with its current or former clients, to encourage customer constancy and repeat business, acquiring new customers or convincing current customers to purchase something instantly, and adding advertisements to email messages sent by other companies to their customers.