How to ensure PIPEDA compliance for dental patient communication in Canada?

Canadian dental clinics must comply with PIPEDA (Personal Information Protection and Electronic Documents Act) when communicating with patients electronically. Key requirements: obtain explicit consent before sending marketing messages, provide easy opt-out mechanisms in every message, store patient data only as long as necessary, and ensure third-party communication tools are also PIPEDA-compliant. For SMS communication specifically, clinics should document consent at intake and honor opt-out requests within 10 business days.