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IMb Tracing™
Learn how to obtain mail tracing data through the use of the Intelligent Mail Barcode by reviewing the IMb Tracing User Guide. For more information on IMb Tracing,

please call the IMb Tracing Customer Help Desk at 800-238-3150, option 1 or visit https://mailtracking.usps.com.

OneCode ACS®
Learn how the process works, the features available, and mailer requirements to receive electronic address corrections using the Intelligent Mail barcode.
Downloadable OneCode ACS application and fulfillment access forms.

OneCode ACS Sample Brochure (PDF)

Contact Information:

Important Updates

Standard Mail DSCF Load Leveling Final Rule Published in the Federal Register

The Postal Service has released its Federal Register final rule revising the service standards for Standard Mail that is eligible for Destination Sectional Center Facility (DSCF) rates. These changes will allow a more balanced distribution of DSCF Standard Mail across delivery days. With its new rules, USPS is extending delivery expectation to four days for mail entered on Friday and Saturday. National Implementation began April 10, 2014.


January 2014 Price Change Fact Sheets


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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