AI-powered SMS marketing platform for Shopify brands.
Optimizes message performance and drives revenue with features like Infinity Testing and AI Shopper.
Offers rapid list growth tools, advanced segmentation, and robust compliance management.

Pros

Deep integration with Shopify ecosystem
High ROI on SMS spend (average 34x reported)
AI-driven optimization for campaigns and automations
Fast subscriber list growth tools
Strong focus on SMS compliance and legal protection

Cons

Primarily focused on Shopify, may not be suitable for other e-commerce platforms
Specific pricing details are not publicly available, requiring a demo

What is Postscript SMS?

Postscript is an SMS marketing and sales platform specifically designed for Shopify brands, aiming to make SMS their top revenue-generating channel. It focuses on maximizing return on investment through advanced features like AI-powered message optimization, rapid list growth tools, and comprehensive compliance management. The platform integrates deeply within the Shopify ecosystem, offering tools for subscriber acquisition, targeted messaging, and conversational commerce. The core of Postscript's offering revolves around its AI suite, which includes Brand Center for maintaining brand voice, Infinity Testing for optimizing message variants at scale, and Shopper, an AI-powered shopping assistant for 1:1 customer conversations. It also provides robust features for list growth, such as popups, keywords, checkout collection, and QR codes, alongside sophisticated segmentation and automation capabilities based on various customer attributes and behaviors. Postscript emphasizes compliance with an in-house legal team and strategic partnerships, ensuring merchants are protected from costly lawsuits.

Available on: Web

Data compiled by Toolradar Pricing checked Nov 1, 2026 · How we evaluate

Source postscript.io

Ratings Across the Web

4.8 (161 reviews)

Postscript SMS holds an aggregate rating of 4.8 out of 5 from 161 reviews across G2, last checked September 17, 2026.

G2 161 reviews

4.8/5

Ratings aggregated from independent review platforms. Learn more

Key Features

AI-powered Brand Center for consistent brand voice
Infinity Testing for optimizing message variants with AI
Shopper: AI shopping assistant for 1:1 customer conversations
Desktop & mobile popups for subscriber acquisition
Checkout collection for SMS opt-ins
Advanced segmentation with over 45 filters
Automation triggers based on 65+ events
Flow Builder for visual campaign and automation management

Pricing Plans

Free Trial

Pricing checked Nov 1, 2026. Source: postscript.io/pricing, read Nov 1, 2026

Postscript SMS plans and prices, checked November 2026
Plan	Price	Details
Starter	$0 / mo	Campaigns and automations Unlimited segments Dedicated toll-free number +2 more Show less Subscriber acquisition tools, with 2 opt-in Keywords Branded short link subdomain
Growth	$100 / mo	Starter features Unlimited opt-in Keywords Live chat and email support
Professional	$500 / mo	Growth features Enhanced Analytics Priority live chat/email support +2 more Show less API access for custom integrations "Powered by Postscript" removed from opt-in
Enterprise	Contact us	Professional features Onboarding Launch Specialist Send personalized messages with custom product recommendations +2 more Show less Priority live chat support Data Warehouse Push

Calculate your cost View full pricing

Is Postscript SMS worth the price?

Good value

Postscript SMS offers a fair pricing structure, especially with its generous Starter tier at $0/mo for essential features.

The jump to Growth at $100/mo and Professional at $500/mo seems reasonable for the added support and advanced analytics. This pricing is best for Shopify brands looking to scale their SMS marketing, from startups to large enterprises.

Full Postscript SMS pricing: every plan, hidden costs and alternatives

How Postscript SMS's pricing compares

At $100/mo, billed monthly, Postscript SMS is the most premium of its 3 comparable direct competitors.

Omnisend

$16

Klaviyo

$20

Gorgias

$40

Postscript SMS

$100

Entry paid plan, monthly price, billed monthly. Pricing checked Nov 1, 2026.

Postscript SMS by the numbers

Toolradar data: Postscript SMS's entry paid plan ($100/mo, billed monthly) ranks #8 of 11 (joint) for price among the SMS Marketing tools with a verified entry price and no stated unit, where the median is $49/mo. Its rating is 4.8/5 across 161 reviews, ranking #1 of 20 tools with 20+ reviews in SMS Marketing. As of Nov 2026.

#1 rated in SMS Marketing, out of 20 tools with 20+ reviews in SMS Marketing. Source: Toolradar data, Nov 2026.

Postscript SMS compared with 27 SMS Marketing tools on Toolradar, as of Nov 2026
Metric	Postscript SMS	Peer median	Position (1 is best)
Entry paid plan	$100/mo, billed monthly	$49/mo	#8 of 11 (joint) tools with no stated price unit, verified price
Free plan	Yes	11 of 27 have one	n/a
Listed as an alternative to	2 tools	2	#13 of 27 (joint)
User rating	4.8/5 (across the web, 161 ratings)	4.5/5	#1 of 20 tools with 20+ reviews

Listed as an alternative to: #13 on 2026-10-16 to #13 on 2026-11-02 (rank among 27 tools, 1 is best).

Each position is counted among the tools that have data for that row, as noted under it. A lower entry price ranks higher; prices are read on vendor pages and compared only with tools priced on the same basis. All SMS Marketing data · How we compute this. Advertising and placement fees are not inputs to any position.

Cite this: Toolradar, “Postscript SMS by the numbers”, Nov 2026.

Reviews

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4.8/5

Across 161 verified user reviews on G2

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Best Postscript SMS Alternatives

Top alternatives based on features, pricing, and user needs.

Omnisend Freemium

Email, SMS, and push marketing for ecommerce

4.6

Klaviyo Freemium

Email marketing for e-commerce

4.6

Attentive Paid

Personalized SMS & email marketing at scale

4.6

Gorgias Paid

Customer support built for e-commerce, with deep store integration

4.6

SMSBump Paid

Drive more revenue with best-in-class solutions for Loyalty and Reviews.

4.3

See all e-commerce tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Postscript SMS vs Omnisend Head-to-head: features, pricing, who wins Postscript SMS vs Klaviyo Head-to-head: features, pricing, who wins Postscript SMS vs Attentive Head-to-head: features, pricing, who wins

Explore More

Postscript SMS FAQ

How does Postscript help Shopify brands grow their SMS subscriber list?

Postscript offers several tools for rapid list growth, including customizable desktop and mobile popups, text-to-join keywords, and checkout collection integrations for Shopify, Recharge, and Carthook. It also provides standalone landing pages with opt-in forms and QR codes for physical locations.

What specific AI features does Postscript offer to enhance SMS marketing campaigns?

Postscript AI includes Brand Center for maintaining brand voice consistency, Infinity Testing to optimize message variants for campaigns and automations, and Shopper, an AI-powered shopping assistant for personalized customer conversations. These features aim to drive higher revenue and improve engagement.

Can Postscript integrate with my existing Shopify checkout process to collect SMS subscribers?

Yes, Postscript integrates directly with Shopify and Shopify Plus checkout pages, as well as with Recharge and Carthook. This allows brands to collect SMS subscribers seamlessly during the purchase process.

How does Infinity Testing differ from traditional A/B testing for SMS messages?

Infinity Testing leverages AI to generate and test hundreds or even thousands of on-brand message variants simultaneously, rather than just two. This allows for faster optimization and a deeper understanding of what resonates with customers, leading to significant revenue and EPM lifts.

What kind of segmentation and automation capabilities are available to tailor SMS messages?

Postscript provides over 45 segmentation filters, including historical Shopify data, SMS activity, and geographic location. It also offers more than 65 automation trigger events, such as abandoned cart or order created, and over 85 trigger filters to personalize messages based on specific order details or subscriber attributes.

How does Postscript ensure compliance with SMS marketing regulations?

Postscript prioritizes compliance with an in-house legal team and strategic partnerships, actively participating in the Ecommerce Innovation Alliance. Their product and strategy are built around protecting merchants from costly lawsuits by adhering to common-sense ecommerce policies.

How does Postscript SMS pricing compare with other SMS Marketing tools?

Postscript SMS's entry paid plan ($100/mo, billed monthly) ranks #8 of 11 (joint) for price among the SMS Marketing tools with a verified entry price and no stated unit, where the median is $49/mo. Prices are read on each vendor's own pricing page and compared only with tools priced on the same basis. Source: Toolradar, Nov 2026.

Source: postscript.io

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