SPAM - Part 11

No person should send an e-mail message that includes sexually oriented material and—

1) fail to include in subject heading the words "SEXUALLY-EXPLICIT"

and

2) fail to include in the body of the message:
 a) the words "SEXUALLY-EXPLICIT"
 b) a clear and conspicuous mechanism to opt out
 c) a postal address, and
 d) instructions on how to access the sexually oriented material without any other information or images.