Dear CASL: When Can I Rely On "Implied Consent"?

Canada's Anti-Spam Legislation (CASL) is overly complex and notoriously difficult to interpret – heck, even lawyers start to see double when they read the official title of the law (An Act to promote the efficiency and adaptability of the Canadian economy by regulating certain activities that discourage reliance on electronic means of carrying out commercial activities, and to amend the Canadian Radio-television and Telecommunications Commission Act, the Competition Act, the Personal Information Protection and Electronic Documents Act and the Telecommunications Act).

The concept of implied consent (as opposed to express consent) is built into the law, and the trick is to interpret when, exactly, a company can rely on implied consent to send commercial electronic messages (CEMs). There are a number of different types of implied consent, including a pre-existing business or non-business relationship, and the so-called "conspicuous publication exemption".