Postscript — Independent Software Review

Transform your SMS strategy with AI that learns and generates higher ROI.

Compliance Transparency Index

Grade: A — Score: 85/100

Best For

• Shopify brands that want SMS to become a measurable ecommerce revenue channel rather than a small campaign add-on.
• Marketing teams that need SMS campaigns, automations, subscriber acquisition, segmentation, analytics, response management, and attribution in one platform.
• Brands that want AI-assisted SMS optimization through Brand Center, Infinity Testing, Shopper, and Conversation Insights.
• Ecommerce teams that need integrations across Shopify data, email marketing, customer support, reviews, loyalty, subscriptions, logistics, and workflow automation.
• High-volume brands that can justify Professional, Enterprise, Postscript AI, or a dedicated short code as part of a serious SMS program.

Not Ideal For

• Non-Shopify teams that need a general multichannel marketing automation platform rather than an ecommerce SMS platform.
• Brands that mainly need email marketing, CRM, push notifications, or broad lifecycle automation instead of SMS-first revenue workflows.
• Small merchants that cannot tolerate message fees, carrier fees, a $49 monthly minimum spend on Starter, or a $750/month dedicated short code if they need one.
• Teams that require a self-serve price for every AI feature, because the Postscript AI Plan is sold through a contact-sales path.
• AI-sensitive buyers that need a clear public training opt-out, because the terms allow Postscript to use Inputs and Outputs internally to provide, maintain, develop, and improve Postscript AI and other services.

Operational Overview

Pricing Structure

Starter: $0/month platform fee, $49 monthly minimum spend

• $0.015 or $0.009 per SMS depending on billing context shown on pricing page
• $0.045 per MMS plus carrier fees
• Campaigns and automations
• Unlimited segments
• Dedicated toll-free number
• Subscriber acquisition tools with 2 opt-in keywords
• Branded short link subdomain

Growth: $100/month

• $0.01 or $0.008 per SMS depending on billing context shown on pricing page
• $0.03 per MMS plus carrier fees
• Starter features
• Unlimited opt-in keywords
• Live chat and email support

Professional: $500/month

• $0.007 per SMS
• $0.024 per MMS plus carrier fees
• Growth features
• Enhanced analytics
• Priority live chat and email support
• API access for custom integrations
• Powered by Postscript removed from opt-in

Enterprise: Custom pricing

• Professional features
• Onboarding Launch Specialist
• Personalized messages with custom product recommendations
• Priority live chat support
• Data Warehouse Push

Postscript AI Plan: Contact sales

• Brand Center
• Infinity Testing
• Shopper
• Revenue-driving AI product bundle
• Access to Postscript AI products

Dedicated Short Code: $750/month carrier fee

• Dedicated short code option for high-volume senders
• Carrier pass-through fee
• Alternative to included toll-free number
• Postscript says it does not add markup to the carrier fee

Alternative Consideration

Consider switching to Klaviyo: Klaviyo offers a broader range of marketing automation tools beyond SMS.

Frequently Asked Questions

How does Postscript compare with Klaviyo for Shopify SMS?

Postscript is more specialized around Shopify SMS revenue, subscriber acquisition, response handling, AI message testing, and conversational shopping. Klaviyo is broader because it combines email, SMS, segmentation, and lifecycle automation in one marketing platform. Postscript is the better fit when SMS is a dedicated revenue channel, while Klaviyo may fit better when a team wants email and SMS managed together.

Can Postscript be used with Klaviyo?

Yes. Postscript documents Klaviyo as one of its integrations, so brands can use Postscript for SMS while keeping Klaviyo for email or broader customer lifecycle workflows. This setup makes sense when a Shopify brand wants Postscript's SMS-specific tools without moving every marketing workflow into Postscript.

Is Postscript only for Shopify stores?

Postscript is positioned for Shopify brands and uses Shopify data for SMS campaigns, automations, subscriber acquisition, segmentation, and ecommerce workflows. Buyers outside Shopify should treat that as a major fit limitation. A non-Shopify brand will usually be better served by a more platform-agnostic SMS or marketing automation tool.

Does Postscript support SMS automations for abandoned carts and browse abandonment?

Yes. Postscript includes a Visual Flow Builder with automation templates for workflows such as cart abandonment, browse abandonment, welcome messages, upsell, shipping, and other SMS journeys. These workflows are part of Postscript's core SMS marketing platform rather than only its AI add-on.

Does Postscript collect both email and SMS subscribers?

Postscript is primarily an SMS marketing platform, not a full email marketing platform. It includes subscriber acquisition tools such as popups, checkout collection, onsite opt-in, opt-in forms, and keywords, but buyers who want one system for email plus SMS may prefer Klaviyo, Omnisend, Yotpo Email & SMS, or another multichannel platform.

Can Postscript be embedded on Shopify landing pages instead of only using popups?

Postscript supports subscriber acquisition through onsite opt-in, opt-in forms, popups, checkout collection, and keywords. Teams using custom Shopify landing pages should test the exact placement during setup because landing-page behavior can depend on the Shopify theme, page builder, and implementation method. This is especially important for launches, password pages, and product-drop campaigns.

Does Postscript have AI features for SMS marketing?

Yes. Postscript AI includes Brand Center, Infinity Testing, Shopper, and other AI-suite features. Brand Center helps train AI outputs around brand voice and product context, Infinity Testing generates and tests message variants, and Shopper acts as an AI shopping assistant for SMS conversations.

Does Postscript's Shopper AI answer customer questions?

Yes. Shopper is Postscript's AI shopping assistant for SMS and is designed to answer product questions, respond in the brand voice, engage subscribers, and provide personalized shopping help. It should be evaluated as a sales and conversational commerce feature, not as a general customer-support helpdesk replacement.

Does Postscript integrate with customer support, reviews, subscriptions, and logistics tools?

Yes. Postscript documents integrations across ecommerce, email marketing, customer support, reviews, loyalty, subscriptions, quizzes, shipping and logistics, and workflow automation. The finalized integration list includes Shopify, Klaviyo, Gorgias, Yotpo, Recharge, Okendo, Tapcart, Malomo, Loop, Zendesk, Wonderment, Justuno, Fera, Stamped, and the Postscript API.

Does Postscript use customer inputs and AI outputs to improve its AI services?

Yes. The finalized features evidence treats Postscript's training opt-out as not documented because the AI terms allow Postscript to use Inputs and Outputs internally to provide, maintain, develop, and improve Postscript AI and other services. AI-sensitive buyers should review the AI terms carefully before using Brand Center, Infinity Testing, or Shopper.

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