Pricing & Classification DMM Advisory

Message board to keep postal customers informed of changes to mailing standards, services, and prices.

June 1, 2010

Postal Explorer — Mailer’s Tool Kit

A few years ago, the Domestic Mail Manual (fondly referred to as the DMM®) was revised based on extensive industry feedback; it is instantly accessible on Postal Explorer® at

Each chapter of the DMM is intra-linked for ease-of-use and is customized for the user. The chapter numbering system of the DMM is easy:

  • 100 — retail
  • 200 — commercial letters and cards
  • 300 — commercial flats
  • 400 — commercial parcels

If you need several items at a glance, a tool known as the Quick Service Guide (QSG) downloads quickly and contains many graphics—it's the show and tell of mailing preparation and highlights key areas in each of our mailing categories. The QSGs follow the same numbering systems as the DMM.

Notice 123 - Price List is posted for quick access to all domestic and international pricing, along with Publication 28 which contains very specific addressing standards.

There are very easy-to-use tools posted for beginners too, such as the DMM 100, A Customer’s Guide to Mailing, and Business Mail 101.

Need to know international standards and individual country listing requirements? The International Mail Manual (IMM®) is just one click away on Postal Explorer.

If you haven't looked at Postal Explorer lately, we urge you to take 20 seconds this morning, and go to You'll be glad you did.

Our customers tell us that one of the things they like best about Postal Explorer is that it helps them save time by finding items quickly (fabulous search engine). They also tell us that it helps them stay current because changes are posted in one spot each month under the "DMM Summary of Changes."

What could be simpler than that?