notice with respect to obscene matter distributed by mail and detention thereof

notice with respect to obscene matter distributed by mail and detention thereof Sec. 307. In order to alert the recipients of mail and the general public to the fact that large quantities of obscene, lewd, lascivious, and indecent matter are being introduced into this country from abroad and disseminated in the United States by means of the United States mails, the Postmaster General shall publicize such fact (1) by appropriate notices posted in post offices, and (2) by notifying recipients of mail, whenever he deems it appropriate in order to carry out the purposes of this section, that the United States mails may contain such obscene, lewd, lascivious, or indecent matter. Any person may file a written request with his local post office to detain obscene, lewd, lascivious, or indecent matter addressed to him, and the Postmaster General shall detain and dispose of such matter for such period as the request is in effect. The Postmaster General shall permit the return of mail containing obscene, lewd, lascivious, or indecent matter, to local post offices, without cost to the recipient thereof. Nothing in this section shall be deemed to authorize the Postmaster General to open, inspect, or censor any mail except on specific request by the addressee thereof. The Postmaster General is authorized to prescribe such regulations as he may deem appropriate to carry out the purposes of this section.