CHICAGO, February 5, 2001 R.R. Donnelley & Sons Company's (NYSE:DNY) Mattoon, Ill., manufacturing facility has been awarded PostalOne! certification by the United States Postal Service (USPS). R.R. Donnelley is the first commercial printer to achieve this certification and many more of its facilities will soon follow. "Being certified to use PostalOne! means that electronic information will replace paper-based documentation; mail is routed by way of the most cost effective and timely transportation possible; and service is improved all-around," said Larry Goodman, manager, Business Customer Support Systems, USPS. "We are very satisfied with R.R. Donnelley's technological capabilities and its ability to run this program in its Mattoon facility, so we approved its participation in the program." PostalOne! electronically links the USPS to its major customers via the Internet. It changes the way business mailing information is exchanged; bulk mailings are verified; postage statements are processed, and transportation is assigned. Key USPS mail induction and production processes will move from paper-based processes to electronic processes. PostalOne! can provide benefits such as more efficient service and better tracking capabilities. In the PostalOne! process, R.R. Donnelley uses technology and the Internet to send mailing information, such as piece weight and number of pieces, to the USPS. The mail is prepared, made available for USPS verification and acceptance, and finally entered into the postal system mail stream. Mailers and customers can capture information about the status of the mailing as it moves through the postal system.