Through an intriguing 'Confidential' envelope containing a file of fictional top-secret 'case studies', the USPS demonstrated that they can provide solutions to the most common challenges businesses face when making shipping decisions. In this way, they could show an understanding for business concerns as well as highlight key benefits that offer a competitive advantage.

The impact of this piece is not so much in the 2.14% of recipients that requested more details on USPS products and services, but in the follow-up research. 76% of those who had seen the mailing felt the USPS was helping their business. And nearly 80% rated the service attributes highlighted in the piece as very valuable.