Contact Directory

Contact support for the product or service below. 

Visit MDA Helpdesk
ABCD
ACS™

Email: acs@usps.gov

Telephone: 1-877-640-0724 (Option 1)

ANKLink®

Email: ncoalink@usps.gov

Telephone: 1-800-589-5766

Address Element Correction (AEC)

Email: cds.ncsc@usps.gov

Telephone: 1-800-238-3150 ext. 6556

Address Element Correction II (AEC II)

Email: cds.ncsc@usps.gov

Telephone: 1-800-238-3150 ext. 6556

Address Information System (AIS) Viewer

Email: incsc@usps.gov

Telephone: 1-800-238-3150

Address Matching System API (AMS API)

Email: amsapi@usps.gov

Telephone: 1-877-640-0724

Ancillary Service Endorsements

Telephone: 1-800-238-3150

CASS™

Email: cassman.ncsc@usps.gov

Telephone: 1-800-238-3150

Carrier Route Product

Email: incsc@usps.gov

Telephone: 1-800-238-3150

City State Product

Email: incsc@usps.gov

Telephone: 1-800-238-3150

Computerized Delivery Sequence (CDS)

Email: cds.ncsc@usps.gov

Telephone: 1-800-238-3150 ext. 6556

County Project

Email: cds.ncsc@usps.gov

Telephone: 1-800-331-5746 ext. 6556

Customer Label Distribution System (CLDS)

Email: topeka.lpc@usps.gov

Telephone: 1-800-332-0317 (Option 3)

Customs Forms

Email: customsformcert@usps.gov

Telephone: 1-877-264-9693

DPV®

Email: ncsc.dpv@usps.gov

Telephone: 1-800-589-5766

DSF2®

Email: ncsc.dpv@usps.gov

Telephone: 1-800-589-5766

Delivery Statistics Product

Email: incsc@usps.gov

Telephone: 1-800-238-3150

Drop Shipment Management System (DSMS)

Email: fast@usps.com

Telephone: 1-877-569-6614

EFGH
Electronic Address Sequencing (EAS)

Email: cds.ncsc@usps.gov

Telephone: 1-800-238-3150 ext. 6556

Electronic Documentation (eDoc)

Email: postalone@usps.gov

Telephone: 1-800-522-9085

Electronic Verification System (eVS®)

Email: evs@usps.gov

Telephone: 1-877-264-9693

Enhanced Line of Travel (eLOT®)

Telephone: 1-800-238-3150

Every Door Direct Mail® (EDDM®)

Telephone: 877-747-6249

eInduction

Email: intelligentmailsupport@usps.gov

Telephone: 1-800-522-9085

Five-Digit ZIP® Product

Email: incsc@usps.gov

Telephone: 1-800-238-3150

Folded Self-Mailer

Email: mda@usps.gov

Telephone: 855-593-6093

Full-Service Assessments

Email: postalone@usps.gov

Telephone: 800-522-9085

Getting Started with Business Mail

Email: postalone@usps.gov

Telephone: 1-800-522-9085

MNOP
MASS™

Email: cassman.ncsc@usps.com

Telephone: 1-800-642-2914

Mail Anywhere

Email: postalone@usps.gov

Telephone: 1-800‐522‐9085

Mailer Identifier (MID)

Email: intelligentmailsupport@usps.gov

Telephone: 1-800-522-9085

Mailer Scorecard

Email: intelligentmailsupport@usps.gov

Telephone: 1-800-522-9085

Manifest Mailing System

Telephone: 800-238-3150

Move Update

Email: MoveUpdate.ncsc@usps.gov

Telephone: (800) 238-3150

NCOALink®

Email: ncoalink@usps.gov

Telephone: 1-800-589-5766

National Zone Charts Matrix

Email: labellist.ncsc@usps.gov

Telephone: 1-800-238-3150

Network Rationalization

Email: marty.j.bender@usps.gov

Telephone: 1-850-994-9210

OneCode ACS®

Email: onecodesolution@usps.gov

Telephone: 1-877-640-0724

Parcel Data Exchange (PDX) API

Email: DTS-PDX@USPS.GOV

Telephone: 1-877-264-9693

Product Tracking and Reporting (PTR)

Email: Delivery.Confirmation@usps.gov

Telephone: 877-264-9693, option 1

QRST
RDI™

Email: incsc@usps.gov

Telephone: 1-800-238-3150

Seamless Acceptance

Email: intelligentmailsupport@usps.gov

Telephone: 1-800-522-9085

Secure Destruction

Email: acs@usps.gov

Telephone: 1-877-640-0724

Service Hubs and Facilities

Email: ncsc.servstan@usps.gov

Telephone: 1-800-238-3150

Service Standards

Email: ncsc.servstan@usps.gov

Telephone: 1-800-238-3150

Shipper Paid Services

Email: acs@usps.gov

Telephone: 1-877-640-0724

SingleSource ACS™

Email: acs@usps.gov

Telephone: 877-640-0724 (Option 1)

SuiteLink®

Email: ncoalink@usps.gov

Telephone: 1-800-589-5766

Traditional ACS™

Email: acs@usps.gov

Telephone: 1-877-640-0724 (Option 1)

UVWXYZ#
Z4Change Product

Email: incsc@usps.gov

Telephone: 1-800-238-3150

ZIP + 4® Product

Email: incsc@usps.gov

Telephone: 1-800-238-3150

ZIPMove Product

Telephone: 1-800-238-3150

ZIPSPLIT

Email: ribbsfeedback@usps.gov

Telephone: 800-238-3150

Zone Analysis Program (ZAP)

Email: pave.ncsc@usps.gov

Telephone: 1-800-238-3150

Zone Charts

Email: labellist.ncsc@usps.gov

Telephone: 1-800-238-3150

99% Testing

Email: moveupdate.ncsc@usps.gov

Telephone: 1-800-589-5766