A marketing tool that establishes a connection
Postcards and doorknockers are a crucial marketing tool and can be used to attract new clients or give a friendly reminder of services to existing ones.
Direct mail marketing pieces (postcards, flyers, doorknockers, etc) provide customers with something tangible they can hold in their hands. A connection with the company forms as customers hang it on their refrigerators or other prominent areas in their home. Each time they see that promotional marketing postcard, it sparks a reminder to interact with that company, even if the interaction is merely looking up the website for more information.