Postscript: What It Actually Does, What It Costs, and Who It Fits
An SMS marketing platform built exclusively for Shopify merchants, pairing published entry-level pricing with compliance tooling baked into every capture and messaging flow.
Postscript is built specifically for Shopify stores that want an accessible way into SMS marketing, with published entry pricing instead of a mandatory sales call, deep Shopify-native data, and compliance tooling (opt-in disclosure, keyword handling, quiet hours) built into the capture flow by default. It's not built for non-Shopify stores at all, and larger senders with heavy volume will eventually land on custom Enterprise pricing much like its bigger competitors.
What Postscript Is For
Postscript is an SMS marketing platform built exclusively for Shopify merchants. Its core strength is deep, native integration with Shopify order, customer, and product data, which powers segmentation and automation flows like abandoned cart, back-in-stock, and post-purchase sequences without relying on a third-party connector. Compliance is built into the product rather than bolted on: required opt-in disclosure language, double opt-in configuration, and automated STOP/HELP keyword handling apply by default across its list-growth and messaging tools.
It's positioned as a more accessible entry point into SMS marketing than larger enterprise-first competitors, with a free-platform-fee Starter tier and published paid plans rather than a mandatory sales quote for smaller stores. Recent product investment has focused on AI-assisted message testing and two-way conversational texting, aimed at helping smaller teams run a more sophisticated SMS program without a large in-house team.
Key Features
- Native, Shopify-exclusive integration syncing order, customer, and product data directly into segments and flows
- Compliance tooling built into every capture and messaging tool by default, including required disclosure language, double opt-in, and automated STOP/HELP keyword handling
- Standard ecommerce automation flows: abandoned cart, back-in-stock, post-purchase, and win-back sequences
- AI-assisted message and offer testing to identify higher-performing sends without manual A/B setup
- Two-way conversational texting for support-style replies alongside broadcast campaigns
- Dedicated short codes and 10DLC number support with carrier compliance handled as part of onboarding
Pros & Cons
Pros
- ✔ Published entry-level pricing and a pay-as-you-go Starter plan, so a smaller store can start without a mandatory sales call
- ✔ Deep, Shopify-native data sync built specifically for the platform rather than adapted from a general-purpose tool
- ✔ Compliance tooling (disclosure language, opt-in, keyword handling) is on by default across capture and messaging, not an optional add-on
Cons
- ✕ Only works with Shopify, so it is not an option at all for stores on other ecommerce platforms
- ✕ Reported pricing for the Growth tier varies across sources, so the real cost at your list size is worth confirming directly before budgeting
- ✕ Moves to custom Enterprise pricing at higher volume, meaning the largest senders still end up in a sales-quote process eventually
Pricing
| Tier | Price (approx, billed monthly) | What you get |
|---|---|---|
| Starter | $0 platform fee, pay-per-message at roughly $0.015/SMS and $0.045/MMS | Core SMS sending, list growth tools, and built-in compliance tooling, billed only for messages sent |
| Growth | Reported from roughly $25-100/month, scaling with contact and message volume | Full automation flows, deeper segmentation, and higher included message volume |
| Professional | Reported from roughly $500/month | Higher-volume sending, advanced testing tools, and priority support for larger Shopify stores |
| Enterprise | Custom, quote-based | High-volume sending, dedicated account management, and negotiated contract terms for the largest Shopify brands |
All plans include a 30-day free trial with $100 in messaging credit. Carrier surcharges of roughly $0.003-0.005 per message segment apply on top of platform and per-message fees.
Pricing checked as of mid-2026 and hedged as approximate. Postscript publishes some tier pricing but reported figures for the Growth plan vary across third-party sources, so confirm current numbers directly on Postscript's pricing page before budgeting.
Common questions
Postscript publishes real entry-level pricing, a pay-per-message Starter plan with no platform fee, plus paid Growth and Professional tiers with reported starting figures. That is a meaningfully different model from Attentive, which is quote-based and typically requires a sales conversation regardless of store size. Only Postscript's top Enterprise tier moves to custom, quote-based pricing.
No. Postscript is built exclusively for Shopify, and that focus is exactly what enables its deep native data sync. A store on a different ecommerce platform needs a different SMS tool entirely.
Compliance tooling is built into the product by default: required opt-in disclosure language, double opt-in configuration, and automated STOP/HELP keyword handling apply across its capture and messaging tools, with support for dedicated short codes and 10DLC registration. As with any SMS platform, final responsibility for lawful consent and message content still sits with the sending brand.
Not a genuinely free ongoing tier. The Starter plan has no monthly platform fee but still charges per message sent, and all plans come with a 30-day free trial that includes $100 in messaging credit to test the platform before committing.
At comparable message volume, generally yes, especially for smaller stores, since Postscript publishes accessible entry pricing while Attentive requires a custom quote with a quarterly minimum commitment. At high enterprise volume the gap narrows, since Postscript's own top tier also becomes custom-quoted. See our full Attentive vs Postscript comparison for the detailed breakdown.
Not sure if Postscript is the right fit for your Shopify store?
We'll look at your actual list size and message volume before recommending a platform, sometimes the answer is a simpler starting tier than you expect.
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