Postal Officials Don't Know Whether the FSS Is Saving Money

The U.S. Postal Service doesn’t know whether the Flats Sequencing System (FSS) is reducing its costs and doesn’t seem to be trying to find out.

Both postal officials and mailers have been hoping for several years that FSS would yield substantial decreases in the cost of handling and delivering flat mail.

But only about 30 percent of flat mail is being processed on the football-field-sized machines, which are failing to live up to expectations and have led to a legal dispute between USPS and the company that built the machines.