Sending a letter may soon require more than a 37-cent stamp. It might also require a valid photo ID. A small change in labeling requirements for bulk mailings announced Oct. 21 requires bulk mailers to identify themselves on the outside of the envelope with a valid address. This marks the first step in the Postal Service’s desire to create “intelligent mail.” The Postal Service issued the proposal in response to recommendations in a July report (PDF) written by the President’s Commission on the United States Postal Service. The outside commission urged the Postal Service to become more like a private business and to take steps to improve security in the wake of the anthrax letter attacks of 2001 that killed five people and contaminated postal facilities and Senate offices. Full Story