You can and it was defined: https://en.wikipedia.org/wiki/CAN-SPAM_Act_of_2003 https://en.wikipedia.org/wiki/CAN-SPAM_Act_of_2003 Also, your example falls unde

You can and it was defined: https://en.wikipedia.org/wiki/CAN-SPAM_Act_of_2003 https://en.wikipedia.org/wiki/CAN-SPAM_Act_of_2003 Also, your example falls under the Compliant class of emails under the act. Edit: (since I can't reply to a poster from whom I received a down vote) I agree, the act is too narrow in my opinion. I don't equate clicking "spam" with compliance with the law. I was simply stating that the parent post's "slippery slope" assertion wasn't accurate in this case.