What problem does it solve? Launching SMS marketing without expert guidance leads to TCPA violations, carrier filtering from missing A2P 10DLC registration, and burned-out subscriber lists from over-sending. This Skill provides the compliance rules, sequence templates, platform comparisons, and measurement benchmarks needed to run a profitable SMS program. ## Core Features & Use Cases - Compliance-First Planning: Covers TCPA express written consent, A2P 10DLC registration, GDPR, CASL, quiet hours, and STOP/HELP handling with audit-ready checklists. - 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, Plivo, Brevo, and Customer.io by use case, pricing, and integration depth. - Use Case: A Shopify skincare brand with 80K email subscribers asks where to start with SMS. The Skill runs a compliance readiness check, recommends Klaviyo SMS or Postscript, and prioritizes abandoned cart and replenishment flows by ROI. ## Quick Start Ask the assistant to design an abandoned cart SMS sequence for your store with compliant opt-in language and per-message timing.