Recently someone asked me what they can and cannot do with regard to emails.  I did some research and found a really good Q & A from the Bureau of Consumer Protection.  Here are the brief rules:

1) Don’t use false or misleading header (from: or to:) information

2) Don’t use deceptive subject lines

3) If a message is an advertisement identify it as such early in the message

4) Tell recipients where you are located

5) Tell recipients how to opt out of future emails

6) Honor opt-out requests promptly

7) If you hire another company to send emails for you make sure they are doing the above things

The law has been revised to clarify that you cannot require a fee or any additional information in order to opt out, and several things that define what a person is and which sender in a group is responsible, etc.

For more information:

Compliance Guide

Compliance Guide PDF version

Revisions of the Law