Postscript is the SMS and email marketing platform for Shopify and Shopify Plus brands that combines two-way conversational SMS, automated journey flows, AI-generated message creative, and segmentation to drive repeat purchases and personalized customer engagement. Marketed as SMS and email marketing for Shopify, Postscript combines two-way conversational SMS with Sales Concierges live chat agents, automated welcome and abandoned-cart journeys, AI-generated SMS copy under Postscript AI, list growth tools and pop-ups, segmentation by purchase behavior, integrations with Shopify, Shopify Plus, Klaviyo, ReCharge, Yotpo, Loox, Gorgias, and major Shopify ecosystem tools, TCPA-compliant carrier integrations, plus REST API access. Postscript is a strong fit for Shopify brands launching SMS revenue channels, DTC operators running multi-channel lifecycle marketing, and Shopify Plus merchants consolidating SMS plus live chat agent service.