All electronic advertising, including that sent via e-mail, telephone, or facsimile, must comply with all anti-spamming laws within the intended jurisdiction where the recipient resides. The members are under obligation to research and comply with all local laws concerning unsolicited commercial e-mail.
(Within the USA) Under United States law, it is unlawful "to use telephone, facsimile machine, computer, or other device to send an unsolicited advertisement. Electronic mail advertisement means any e-mail message, the principal purpose of which is to promote, directly or indirectly, the sale of other distribution of goods or services to the recipient." (CAN-SPAM Act of 2003)