Proven Strategies for Plumber, Roofer and HVAC Marketing. So, you might be thinking, “wait, send Direct Mail? I thought that channel had died long ago?" We believe there is a right way to do direct mail, especially for small business owners. Since 1949, we have helped thousands of business owners with our proven strategies. Today, we want to share some of our tips that will help with your Plumber, Roofer or HVAC Marketing needs. If this is your first thought that comes to mind, "direct...