What problem does it solve? Launching SMS marketing without a plan leads to carrier filtering, TCPA violations with $500-$1,500 per-message penalties, and burned-out subscriber lists. This Skill guides you through compliant opt-in setup, A2P 10DLC registration, sequence design, and platform selection so your SMS program drives revenue without legal or deliverability risk. ## Core Features & Use Cases - Compliance-First Setup: TCPA, A2P 10DLC, GDPR, and CASL requirements with opt-in disclosure templates, STOP/HELP handling, and quiet hours enforcement. - Sequence Templates: Ready-to-use copy with character counts for abandoned cart, welcome, post-purchase, win-back, replenishment, and promotional flows. - Platform Selection: Compares Klaviyo SMS, Postscript, Attentive, Twilio, Brevo, and others by stack, list size, and use case. - Use Case: A Shopify skincare brand with 80K email subscribers and no SMS program gets a prioritized launch plan: A2P registration check, Klaviyo SMS or Postscript recommendation, abandoned cart flow first, then replenishment and win-back sequences. ## Quick Start Ask the assistant to design an abandoned cart SMS sequence for your store, including timing, copy with character counts, and compliance footers.