Postscript | Integration with Yuma AI
Postscript is an SMS marketing and sales platform built specifically for Shopify and Shopify Plus brands. Unlike multi-channel marketing platforms, Postscript runs SMS as its sole product focus. The product set includes SMS Marketing, Postscript AI for AI-driven optimization, RCS for branded rich messaging, Shopper as an always-on AI shopping assistant for SMS, Infinity Testing for AI-powered message variant testing, and Postscript Plus, a managed service where in-house SMS strategists run and optimize the program for the merchant. Postscript maintains an in-house legal team focused on SMS compliance and is a leadership member of the Ecommerce Innovation Alliance. The platform is used by brands including Dr. Squatch, Ruggable, Brooklinen, Caraway, Kopari, MUD\WTR, Death Wish Coffee, Fly By Jing, True Classic, Ridge, Heart & Soil, and Thrive Causemetics.
Yuma & Postscript
Yuma AI integrates with Postscript to get context on a customer's SMS marketing relationship with the brand when handling support conversations. With the integration in place, Yuma has visibility into Postscript data, so support replies can account for which SMS campaigns a customer received, which they engaged with, and what discounts or offers were sent through text. Yuma also integrates with other marketing platforms including Klaviyo and Attentive.
Key Features of Postscript
SMS Marketing Built for Shopify
Postscript's core SMS product handles list building, subscriber segmentation, campaigns, automations, and conversational two-way messaging. The platform is built natively for Shopify, with deep integration into Shopify customer, order, and product data so SMS messages can use real ecommerce signals for targeting and personalization.
Postscript AI and Infinity Testing
Postscript AI is the AI layer across the platform, with reported revenue lifts of around 20% on AI beta features. Infinity Testing is a specific AI capability that replaces traditional A/B tests by generating and testing hundreds of on-brand message variants in parallel, designed to find the highest-performing message faster than manual experimentation.
Shopper, the AI SMS Shopping Assistant
Shopper is an always-on AI shopping assistant that runs over SMS, answering customer questions in real time and guiding shoppers toward purchase through conversational engagement. It works as a 1:1 channel rather than a broadcast tool, with the goal of replicating an in-store associate experience over text.
RCS for Branded Rich Messaging
The RCS product gives brands a verified branded sender profile inside the standard text inbox, with support for rich media, product carousels, and interactive elements. RCS is positioned as the upgrade path from plain SMS for brands that want richer text experiences without leaving the messaging channel.
List Growth Tools
Postscript reports that brands grow their SMS lists 3x faster on the platform than on other tools, driven by the Popup Editor, Onsite Opt-In, and CashBack. Onsite Opt-In specifically is reported to drive a 50% increase in conversion rate after deployment.
Postscript Plus Managed Service
Postscript Plus is a managed service where Postscript's in-house strategists run and optimize the SMS program directly. This is positioned for brands that want to scale the channel without hiring a dedicated internal SMS team, with the strategist acting as an extension of the marketing team.
Compliance Infrastructure
SMS regulations carry meaningful legal risk, particularly under TCPA in the U.S. Postscript's in-house legal team and compliance product set are built to manage that risk across opt-ins, message content, and delivery, and Postscript is active in shaping ecommerce SMS policy through industry organizations.
Why use Postscript?
Sole Focus on SMS as a Revenue Channel
The core argument for Postscript is concentration: every product decision, strategist, and engineering investment goes toward making SMS work harder. For Shopify brands that already run email, loyalty, and reviews through other tools, having a specialist SMS partner avoids the trade-offs that come with all-in-one platforms.
Strong Reported Channel ROI
Postscript reports an average 34x return on SMS spend across its customer base, with 22% of online revenue attributed to Postscript SMS for brands using the platform. These outcomes are positioned as the channel-level case for SMS rather than for any one feature.
Trusted by High-Volume DTC Brands
The customer base spans high-volume direct-to-consumer brands across personal care, food and beverage, home goods, accessories, and apparel, including Dr. Squatch, Ruggable, Brooklinen, Caraway, MUD\WTR, Death Wish Coffee, Fly By Jing, and True Classic. For brands evaluating SMS at scale, the customer list provides peer benchmarks on what's possible.
Try Before Committing
Postscript offers a 30-day free trial, so brands can install the platform and run live campaigns on real subscribers before signing a contract.
Getting Started with Postscript
To get started with Postscript, book a demo or start a free trial. For details on each product, see the pages on SMS Marketing, Postscript AI, Shopper, RCS, Infinity Testing, and Postscript Plus. For pricing, see the Postscript pricing page. For the full list of features, see the features page. For the integrations directory, see Postscript integrations. Developers can review the Postscript API documentation and the help center.
