Loosely defined as the act of sending commercial messages to a predefined database or group of contacts for the purpose of enticing the customer to perform a predefined action.
Mass email marketing is still popular in the Middle East and Far East. Why use it? Its affordable, measurable, easy and familiar and it does work. Yes, some may mark your emails as spam or junk but if you use a third-party provider, that will not have any impact on your Google rankings or quality score.