Your online or bricks and mortar electronics outlet may already be using an email marketing program to promote its products and keep in contact with current customers. But, how can you maximize the potential of this tool to create greater sales growth on a more consistent basis? One way to maximize your use of email marketing programs is through growing your contact list. Growing your contact list through promotions and contests will increase your potential for sales. And I'm sure I don't have to tell you why that is worthwhile.