The United States Postal Service started a dead letter office in 1825 to deal with undeliverable mail. In 2006 approximately 90 million
undeliverable-as-addressed (UAA) items ended up in this office; where the rightful owners cannot be identified, the correspondence is destroyed to
protect customer privacy, and enclosed items of value are removed. Items of value that cannot be returned are sold at auction, except for pornography
and firearms. The auctions also occasionally include items seized by postal inspectors and property being retired from postal service.[citation
needed]
These facilities are now known as mail recovery centers (MRC). Other former names include dead letter branch and dead parcel branch. These facilities
are not unique to the US Postal Service, and go by different names in other countries. The USPS mail recovery centers are located in Atlanta, Georgia
and Saint Paul, Minnesota. An MRC in San Francisco, California was closed on September 13, 2002. Since April 2013, the postal auctions have been held
online and include not only material lost in the U.S. but also material from other national postal authorities who consign them to the USPS for
auction. |