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The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossaryPrivacy & IdentityCanada's Anti-Spam Legislation (CASL)

Privacy & Identity

Canada's Anti-Spam Legislation (CASL)

Canadian law requiring consent, sender identification and an unsubscribe mechanism for commercial electronic messages such as marketing email and texts.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

Canada's Anti-Spam Legislation (CASL) is a federal law, in force since 2014, that regulates commercial electronic messages such as marketing emails and texts. Senders must have express or implied consent, identify themselves clearly, and include a working unsubscribe mechanism. Violations can bring administrative penalties of up to $10 million per violation for businesses.