USPS National Change of Address (NCOA) gives you electronic move updates going back 48 months. Your list is automatically populated with the new move address. Address validation makes sure the addresses are, according to the USPS, deliverable addresses. We look at each address to make sure they meet the USPS standards. The combination of address validation and NCOA is the most reliable and quickest way to keep in contact with your clients, as well as the fastest postal delivery time.
Olympic Presort also offers mailing lists with just about any demographic.