(a) No person shall transmit or cause another person to transmit an unsolicited facsimile advertisement; provided, that a not-for-profit membership organization exempt from paying taxes under § 501(c) of the Internal Revenue Code ( 26 U.S.C. § 501(c) ) is exempt from this subsection (a), if the facsimile is made by a bona fide member, volunteer, or direct employee of the organization to its current membership.
(b) Any transmission by facsimile machine shall include in a margin at the top or bottom of each transmitted page or on the first page of the transmission the date and time of the transmission; an identification of the business, other entity, or individual sending the message; and the telephone number of the sending machine or of such business, other entity or individual.