Canada passed a new anti-spam law that took effect July 1, 2014 known as the Canadian Anti-Spam Legislation, or CASL. The law covers all email messages sent from or received in Canada. If you send email to recipients that live in Canada, the law applies to you even if you are not located in Canada.
If your email messages are affected by this law, here's some things you need to know:
CASL applies to commercial email messages (CEM), which are defined as messages that "encourage participation in commercial activity." Newsletters may or may not be considered CEMs depending on their content. If they contain ads or anything that leads to solicitation for money, they can be considered CEMs.
The fines for violating the new Canadian anti-spam law are up to $10 million. Canada has set up a frequently asked questions site about CASL that you can check out for more information.