Pricing & Classification DMM Advisory

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

July 7, 2011

Improving the Mail Service Update Process

In response to recommendations from a Mailers Technical Advisory Council (MTAC) workgroup, the Postal Service is improving our Mail Service Update (MSU) process.

These improvements include expanding and standardizing information to provide mailers with timely updates on occurrences such as service disruptions due to weather, diversion of drop shipments and scheduled resumption of operations.

The updates are made in real time, and in many cases, frequently.

To receive MSU notifications via email whenever we make a change, please click on Mail Service Update or send an email to Be sure to put “Subscribe” in the subject line. Each notification you receive will provide you with an opt-out option.

Even if you don’t want to receive the “pushed” email notifications, you can always check (accessible through or RIBBS®) for up-to-date, downloadable information.