According to Federal Trade Commission, the CAN-SPAM Act is a law by US government, which sets the rules for commercial email, establishes requirements for commercial messages, gives recipients the right to have you stop emailing them, and spells out tough penalties for violations. Declination of the CAN-SPAM Acti is Controlling the Assault of Non-Solicited Pornography and Marketing Act.
Each seperate email being contrary to law may subject to a penalty up to $42,53.
Details in your commercial messages should be clear and truthful: subject line, email addresses and domain name, and "To" and "From".
Emails that are sent for advertising purposes must be clearly and obviously indicated as an ad.
Messages containing sexual content must contain “SEXUALLY-EXPLICIT:” expression at the beginning of the email subject line.Also, information need to be viewable only in the condition of openning the message.
Emails must contain a valid, registered postal address every time.
Under the legislation, subscribers have the right to opt out from your email list at any time, so opt-out opportunity have to be presented in every email.
Here is an example of CAN-SPAM compliant email;
Here is an example of CAN-SPAM non-compliant email;