Postscript is an SMS marketing platform built exclusively for Shopify and Shopify Plus merchants, helping ecommerce and DTC brands turn text messaging into a top revenue channel. By integrating deeply with Shopify order and customer data, Postscript powers targeted campaigns, automated flows like abandoned cart and winback, and two-way conversational commerce that feels personal, not broadcast. Its AI suite – including Shopper and Infinity Testing – optimizes copy, timing, and segmentation to maximize revenue per message while maintaining strict consent and compliance controls, giving brands a scalable, compliant way to grow repeat purchases and customer lifetime value through SMS-first marketing.