Originally Posted by tigerallenyim

As far as non-adult material/product/services:

Can a person/entity send unsolicited bulk e-mail to anyone so long the e-mail has:
an opt-out mechanism;
a valid subject line and header (routing) information;
the legitimate physical address of the mailer.

But the more important question is:
Does the person/entity need to have the list opted in, double-opted in, or does not require an opt-in.

Thanks.