Products, Services and Publications
Copyright © 2006 United States Postal Service
National Customer Support Center

DSF²™ System

The DSF² System is one of the SnappCheck Address Management Technologies^® services available from the Postal Service to help mailers identify inaccurate or incomplete addresses. The DSF² system assists mailers in obtaining accurate delivery address information and facilitates identification of erroneous addresses contained in mailer address files. DSF² also provides additional information such as type of delivery and LACS^Link™ information. Mailers' use of DSF² helps to reduce the amount of undeliverable-as-addressed (UAA) pieces, which in turn will result in more efficient Postal Service™ mail processing and delivery operations.

DSF² is available through USPS^®-Certified DSF² Vendors. A list of vendors can be accessed at http://ribbs/files/DSF2/DSF2LIC.TXT.  For additional information, please contact the National Customer Support Center at 877-640-0724.