If you are sending emails to Canadians you best make sure they opted in. According to an article in BizJournals.com
From the article:
A Canadian law that targets spam email could have a big impact on Boston-area companies that use email marketing.
Starting July 1, the law makes sending commercial messages to a Canadian resident without their express consent very costly. According to the legislation, the maximum penalty per violation for an individual is $1 million per violation, and for a business, it is $10 million.
The law only affects messages that are clearly commercial, but that method of marketing includes everything from email and text messaging to social media and instant messaging.
Read the full article here
There is a transition period:
Transition
If you are running an email newsletter you should always make sure you are running an opt in list in the first place, this new Canadian law means that now more than ever you need to be diligent when doing email marketing.