Sales Builders USA is Business Development Consulting Firm Located in West Springfield Massachusetts. We use Direct Marketing (Door knocking) as the means to increase our customer's sales. Companies can leverage the cost of customer acquisition by utilizing our organization. We will work in your target market. We will send you as many qualified leads as you can handle. Since you decide what a qualified lead is, the likelihood of closing the sale is that much better. For the Last 15 years we have worked with small to midsize companies in industries where direct selling is most effective.