This document provides an introduction and overview of Canada's Anti-Spam Legislation (CASL) and its impact on businesses. It outlines the three main components businesses must comply with: obtaining consent from recipients, including identification and contact information in messages, and providing an unsubscribe mechanism. Businesses that fail to comply could face fines up to $1 million for individuals or $10 million for companies. The legislation takes effect on July 1, 2014 and the author provides tips and a sample task list for businesses to ensure they are prepared.