SMS Marketing Overview SMS marketing achieves 98% open rates and click-through rates 5–10× higher than email, making it one of the highest-performing direct channels for ecommerce. However, SMS is heavily regulated — TCPA in the US requires explicit written consent, and violations carry fines up to $1,500 per message. Dedicated SMS apps (Postscript, Attentive, Klaviyo SMS) handle compliance, opt-in flows, and 10DLC registration automatically. Custom Twilio implementation is only needed for headless stores. When to Use This Skill - When launching an SMS marketing channel alongside existing ema…