List Hygiene — ABCs of Improving Address Quality

In August, the Postal Service will require DPV (Delivery Point Validation) as part of the CASS process. DPV uses a more extensive database than CASS, and an address that matches on DPV does indeed exist and is properly formatted.

Currently, a typical address list will get a 90 percent to 95 percent match rate on CASS certification. In other words, 5 to 10 percent of the addresses won’t get a ZIP+4. Expect that to get worse when the DPV requirement kicks in. What should you do with these misbehaving addresses?