Customers are always external factors that have a huge impact for each business unit
The greater the number of customers, the higher total revenue of unit. The profit or revenue is determinant to the growth and survival of each unit. So to ensure the development of their, each unit must be given many different strategies to attract customers, especially potential customers, those who really need the product want to own the product and have the affordability to buy products. Currently, businesses have to use a lot of marketing strategies promotion and product promotion, however some business units have yet to learn how to use electronic marketing effectiveness to attract customers. In particular, the campaign Email marketing still seems very new to each unit. This is one of the shortcomings of each business unit. This paper build campaign Email marketing, namely building the deployment step Email marketing, the way to build an email list, design reasonable email or sending mail to customers to help business units attract customers and potential customers to enhance the revenue and profit for the business.