MDA Support Center-Contact Info

The United States Postal Service® MDA Support Center, is a service that connects customers with a Mailpiece Design Analyst who will provide timely assistance and evaluations of mailpiece design, including Reply Mail. Customers may contact the MDA Support Center by:
  • Dialing 855-593-6093, or by,
  • Sending a request via email to

The MDA Support Center hours of operation are Monday through Friday, 8 AM - 5 PM CST.