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

FSS Locations Map
Map of 47 FSS Sites and Number of Machines

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 – April 20, 2016 ***** The most current FSS deployment information including: FSS locations, deployment schedules, operational sites, and FSS zones.

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

Contact Information:

Important Updates

RSS Feed for Important Updates Section

Coming Soon: PostalPro

The RIBBS website has been redesigned and is in the process of transitioning to a new home called PostalPro. www.postalpro
will become the primary source for USPS mailing information.

PostalPro leverages powerful search functionality, intuitive navigation, and a modernized, mobile-friendly design.

Upcoming 2017 Releases

Upcoming 2017 Releases

January 2017 Price Change Fact Sheet

January 2017 Release Overview

January 2017 Release Notes

Market Dominant Pricing Files

Click here for weekly Incorrect Scanner Configuration Report

Click here for 2015 Network Consolidations

Click here for Mail Processing Current and Future Operating Plan

Click here for Network Rationalization Service Standard Analysis

Click here for Plants with Remittance Mail Documents

Click here for Customer Letter regarding 2015 Network Consolidations

Click here for the new Service Type ID information page

Service Hub Facilities

Service Hubs – Mail Prep and Entry

Presort Reference Data Issue Log

FAST Label List Test Data

FAST Enhancements September 25, 2016

IV Migration Overview

Getting Started with Full-Service Intelligent Mail

PostalOne! Contingency Plan

For mailers unable to submit electronic information, click here for the PostalOne! Contingency Plan.


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