Nonmailable Matter

Nonmailable Matter

Any material that the U.S. Postal Service must refuse to carry. Examples of nonmailable matter include advertisements disguised as invoices, hazardous materials and perishables that may not be delivered before they go bad.
References in periodicals archive ?
The law also "amends the federal criminal code to treat cigarettes and smokeless tobacco as nonmailable matter and prohibit their deposit into the U.
86) Nonmailable matter is "[m]atter the deposit of which in the mails is punishable under section 1302, 1341, 1342, 1461, 1463, 1714,(87) 1715,(88) 1717, 1718,(89) or 1738 of title 18.