USPS National Customer Support Center

"All Things FSS" The USPS^® is deploying a new technology that will boost efficiencies in the processing, distribution, and delivery of flats—the Flats Sequencing System (FSS). FSS will automatically sort flat-sized mail into delivery point sequence at high speeds. The efficiencies gained by employing FSS are influencing many changes within both the Postal Service^® and the mailing industry.

Flats Sequencing System (FSS)	Stand Alone Mail Prep (SAMP)

Important Links

Postal Customer Council^®

Federal Register Notices

Mail Pro

Mailpiece Design Analyst

Intelligent Mail^® Barcodes

Flats Strategy
USPS Corporate Flats Strategy

Flats Addressing Requirements
Latest information regarding flats addressing

Flats Mail Prep & Entry
Mail preparation and entry information associated with FSS

Flats Presentations & Communication Resources
FSS presentations and communication tools

FSS Deployment Information
**** UPDATED - September 15, 2009 ***** The most current FSS deployment information including: FSS locations, deployment dates, and FSS zones.

FSS Frequently Asked Questions (FAQs)
Questions and Answers associated with the Flats Sequencing Strategy

Contact Information:
Flats Sequencing Strategy
Email: RIBBS@USPS.GOV
Page updated: 9/15/2009

1-800-238-3150