What problem does it solve? Building an SMS marketing program requires navigating TCPA consent rules, A2P 10DLC carrier registration, per-send cost economics, and sequence design — mistakes in any of these can mean filtered messages, wasted spend, or class-action lawsuits. This Skill provides the operational playbook to plan, write, and optimize SMS campaigns correctly from the start. ## Core Features & Use Cases - Compliance-first planning: Covers TCPA express written consent, A2P 10DLC registration, quiet hours, STOP/HELP handling, GDPR, and CASL with ready-to-use disclosure templates. - Sequence templates with copy: Provides full SMS copy with character counts and timing for welcome, abandoned cart, browse abandonment, post-purchase, win-back, replenishment, and promotional flows. - Platform selection guidance: Compares Klaviyo SMS, Postscript, Attentive, Twilio, Plivo, Brevo, and others by use case, pricing, and A2P support. - Use Case: A Shopify skincare brand with 80K email subscribers and no SMS program asks where to start — the Skill runs a compliance readiness check, recommends a platform, and ranks abandoned cart and replenishment flows by ROI. ## Quick Start Ask the assistant to design an abandoned cart SMS sequence for your store, including timing, copy with character counts, and compliance footers.