Can-Spam Act of 2003
We strictly enforce the Act and the email postcard program complies with this Act. In addition, because you're sending your email postcards only to your contacts who have given you permission to do so, the email postcards are specifically excluded from the Act. "A 'transactional or relationship message' - email that facilitates an agreed-upon transaction or updates a customer in an existing business relationship - may not contain false or misleading routing information, but otherwise is exempt from most provisions of the CAN-SPAM Act." http://www.ftc.gov/bcp/conline/pubs/buspubs/canspam.htm