How to Maintain Your Housefile

Your list also should be processed through change-of-address software several times a year. The most common of these is the USPS National Change of Address (NCOA) program, which is a service that allows you to match your name and address file against a large database compiled by the Post Office. It contains all individuals or families that have moved in the last 36 months. In addition to getting correct addresses for your customers, this prevents maintaining the same customer at two different addresses.