Penalty Mail

Penalty Mail - Official mail sent without postage prepayment by officers of the executive and judicial branches of the U.S. government, by departments and agencies of the U.S. Government, and by specifically authorized individuals. Agencies then reimburse the USPS for the penalty mail service they receive. The term comes from the endorsement "Penalty for Private Use" printed on the mail. (Compare to franked mail.) (Also see Official Mail Accounting System (OMAS).)

[Category=Postal ]

Source: USPS, 16 October 2009 12:51:22, http://www.usps.com/cpim/ftp/pubs/pub32/pub32h_p.html