Postscript Review & Pricing

4.7

By Craig Leontowicz•Updated September 18, 2026

How I review: I don't pretend to have used every single tool on this list (no one has). But I have used a lot of them on client projects and my own projects, and I'm still learning. If I haven't used a tool, I sign up for a test account to explore the interface, check pricing directly, and research reviews from real users.

Ratings methodology: Ratings are weighted across ease of use, automation depth, deliverability track record, integrations, pricing fairness, and support quality. No vendor can pay to improve their rating.

Affiliate links: Some links earn me a commission if you sign up. This never influences my scores or rankings. Tools are always ranked on merit first.

8 min read

The Bottom Line

Postscript is the sharpest SMS marketing platform for Shopify merchants, providing compliant subscriber capture and automated text flows, but its Shopify exclusivity and carrier message fees make it unsuitable for non-e-commerce businesses.

If you manage an e-commerce brand on Shopify or Shopify Plus and want to drive incremental revenue through SMS marketing, Postscript is one of the most effective tools on the market. Built exclusively for the Shopify ecosystem, it connects directly into Shopify's checkout and customer data, allowing you to trigger hyper-targeted text messages for abandoned checkouts, shipping updates, back-in-stock alerts, and VIP promotions.

Platform Features

Email Editor

Drag and Drop Builder

Automation Workflows

Landing Pages

Signup Forms

Popups

The platform is not suitable for stores on WooCommerce, BigCommerce, or Magento, as it cannot be installed outside Shopify. In addition, SMS marketing carries strict regulatory rules and carrier fees that can catch unprepared merchants off guard. But for Shopify stores with consistent web traffic looking for conversational two-way text messaging and automated revenue generation, Postscript consistently outperforms general-purpose messaging tools.

Key Features That Actually Matter

Shopify-Native Data and Checkout Sync

Because Postscript is built 100% for Shopify, its integration is deeper than multi-platform competitors. It tracks checkout events, discount codes, customer tags, and purchase histories with zero lag. You can trigger automated abandoned checkout text messages that include a one-click checkout link pre-loaded with the customer's cart and applied discount.

Two-Way Conversational Sales Desk

Postscript does not treat SMS as a one-way megaphone. When customers reply to promotional or transactional texts with sizing questions or shipping inquiries, those messages route into an integrated chat inbox or your existing helpdesk (such as Gorgias or Zendesk). Sales reps can reply in real time, offer alternative products, and close orders directly inside the text conversation.

Compliance and Opt-in Technology

SMS marketing is governed by strict TCPA and CTIA regulations that carry severe legal fines for non-compliance. Postscript provides compliant popups, checkout checkbox opt-ins, and automated quiet-hour safeguards that prevent texts from sending in the recipient's local time zone before 8 AM or after 9 PM. It also handles automatic keyword opt-outs seamlessly.

Postscript Pricing Plans (2026)

Pricing verified September 2026

View Live Pricing

Tier	Price	Contacts / Limits	Send Limit	Key Gate / Features
Starter	$0/mo base	Unlimited contacts	Pay-as-you-go	$0.015/SMS, $0.045/MMS, core automations and popups
Growth	$100/mo base	Unlimited contacts	Pay-as-you-go	$0.013/SMS, $0.039/MMS, live chat integration, branded toll-free number
Professional	$500/mo base	Unlimited contacts	Pay-as-you-go	$0.010/SMS, $0.030/MMS, dedicated customer success manager, custom onboarding
Enterprise	Custom pricing	High-volume custom	Volume pricing	Dedicated short code, custom SLA, enterprise API access

Pricing Note: Postscript pricing consists of two components: a monthly base platform fee and per-message usage fees. In addition to per-message rates, standard telecom carrier fees (approximately $0.003 to $0.005 per message) apply to all SMS traffic. Higher-tier plans reduce per-message costs, which makes upgrading financially advantageous once your monthly sending volume exceeds 50,000 texts.

Pros & Cons

Pros

Built exclusively for Shopify, providing deep checkout synchronization and immediate data attribution.
Two-way conversational messaging allows customer service and sales teams to chat directly with buyers.
Built-in TCPA and CTIA compliance tools enforce quiet hours and compliant opt-in language automatically.
Starter plan has no monthly subscription fee, allowing small stores to test SMS with pay-as-you-go pricing.
Pre-built automation workflows cover abandoned checkouts, shipping notifications, and restock alerts.

Cons

Strictly limited to Shopify; cannot be used on WooCommerce, BigCommerce, Magento, or custom web shops.
Per-message costs and telecom carrier fees accumulate rapidly on large, unsegmented promotional broadcasts.
Does not offer native email marketing; must be paired with an external email tool like Klaviyo or Omnisend.
Advanced helpdesk integrations and dedicated support require stepping up to the $100 or $500 monthly tiers.

Who It's For vs. Who Should Skip

Who should choose Postscript

Shopify and Shopify Plus brands generating consistent traffic that want an automated SMS revenue channel.
E-commerce stores with high repeat-purchase products, such as apparel, cosmetics, health supplements, and food.
Merchants who want two-way conversational texting to answer pre-purchase questions and assist with sizing.

Who should skip Postscript

Any merchant running their storefront on WooCommerce, BigCommerce, Magento, or custom frameworks.
B2B companies or service businesses where text message marketing is unnecessary or invasive.
New stores without steady website traffic that cannot yet generate enough opt-ins to cover carrier fees.

Alternatives to Postscript

Top replacements and competitor breakdown for Postscript

Full Postscript Alternatives Guide

Omnisend

4.5

Top Choice|Free (up to 1,000 subs)

Email and SMS automation for eCommerce

Visit Site Read Review

Why it's an alternative: Omnisend provides an affordable multi-channel platform combining email and SMS with unified automations for growing stores.

Klaviyo

4.4

|Free (up to 1,000 subs)

Email and SMS for eCommerce growth

Visit Site Read Review

Why it's an alternative: Klaviyo lets Shopify stores consolidate email, SMS, and push notifications into one profile, avoiding duplicate software subscriptions.

Yotpo SMS (SMSBump)

4.4

|Free (up to 1,000 subs)

SMS marketing for eCommerce with reviews integration

Visit Site Read Review

Why it's an alternative: Yotpo SMS combines text marketing with customer reviews and loyalty rewards inside a unified e-commerce suite.

Frequently Asked Questions About Postscript

On the free Starter plan, Postscript charges $0.015 per SMS message and $0.045 per MMS message, plus carrier fees (typically $0.003 to $0.005 per text). On paid tiers like Growth ($100/mo) and Professional ($500/mo), per-message rates drop to $0.013 and $0.010 per SMS respectively.

No, Postscript is built exclusively for Shopify and Shopify Plus. It requires the Shopify app ecosystem and Shopify checkout API to operate. If your store runs on WooCommerce, BigCommerce, Magento, or another platform, you will need to consider alternatives like Klaviyo or Omnisend.

Postscript offers superior two-way conversational sales capabilities, dedicated SMS compliance workflows, and phone customer support desk tools. However, Klaviyo SMS allows you to manage both email and SMS under one roof with consolidated customer profiles and unified attribution. Many high-growth brands use Klaviyo for email and Postscript for specialized SMS.

Postscript Review & Pricing

Platform Features

Key Features That Actually Matter

Shopify-Native Data and Checkout Sync

Two-Way Conversational Sales Desk

Compliance and Opt-in Technology

Postscript Pricing Plans (2026)

Pros & Cons

Pros

Cons

Who It's For vs. Who Should Skip

Who should choose Postscript

Who should skip Postscript

Alternatives to Postscript

Omnisend

Klaviyo

Yotpo SMS (SMSBump)

Frequently Asked Questions About Postscript

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Pricing Plans

Free

Starter