How to know that the September 3rd 2017 USPS price increase does not affect MailStream Plus

MSP 8.3.3, all platforms
The USPS DMM advisory of August 11 2017 said this-
August 11, 2017
DMM Advisory
Pricing — keeping you informed about the prices and mailing standards of the United States Postal Service

First-Class Mail Parcels transfer to the Competitive Price Listing

On July 20, 2017, the Postal Regulatory Commission (“PRC”) conditionally approved the transfer of the First-Class Mail Parcels (“FCMP”) product from the market-dominant product list to the competitive product list.  The transfer was conditioned on the subsequent proposal, review, and approval of prices for the transferred product.  On July 28, 2017, pursuant to Governors’ Decision 16-9, the Postal Service filed a notice of price change seeking to implement new prices for the transferred product.  

The Commission approved the new rates (13 rate cells in total) on August 9, 2017, See Order No. 4032 in Docket No. CP2017-230, and they will go into effect on September 3, 2017.  After implementation, the FCMP product will become a new “Retail” rate category within the existing First-Class Package Service (“FCPS”) product.  The new “Retail” price category will be called “First-Class Package Service – Retail” while the existing FCPS price category will be renamed “First-Class Package Service – Commercial.”  The new FCPS-Retail product has the same characteristics as the former First-Class Mail Parcels product.

The Domestic Mail Manual (DMM®) and DMM Advisories are available on Postal Explorer® ( To subscribe to the DMM Advisory, send an e-mail to Simply indicate, "Subscribe" in the subject line.

More information is available here-

MailStream Plus does not support retail rates, so the increase does not affect it.
UPDATED:  September 7, 2017