Originally Posted by dyna mo

then they are breaking a law.

Woman Faces Jail for Dirty Underwear - ABC News


Every obscene, lewd, lascivious, indecent, filthy or vile article, matter, thing, device, or substance

Is declared to be nonmailable matter and shall not be conveyed in the mails or delivered from any post office or by any letter carrier.

Whoever knowingly uses the mails for the mailing, carriage in the mails, or delivery of anything declared by this section or section 3001(e) of title 39 to be nonmailable, or knowingly causes to be delivered by mail according to the direction thereon, or at the place at which it is directed to be delivered by the person to whom it is addressed, or knowingly takes any such thing from the mails for the purpose of circulating or disposing thereof, or of aiding in the circulation or disposition thereof, shall be fined under this title or imprisoned not more than five years, or both, for the first such offense, and shall be fined under this title or imprisoned not more than ten years, or both, for each such offense thereafter.

18 U.S. Code § 1461 - Mailing obscene or crime-inciting matter | US Law | LII / Legal Information Institute