Postscript
SMS and RCS marketing for Shopify stores, billed per message sent
Postscript report card
Fair · out of 4.0 · graded Oct 18, 2026
Best for SMS marketing for Shopify stores
Postscript is text marketing built around Shopify: campaigns, cart and browse abandonment flows, popups and segments built on order data. Starter has no platform fee, just a $49 monthly minimum spend on messages at $0.009 per SMS. It's a neat fit for a Shopify store, and an awkward one for anyone else.
Who Postscript is for
- Great if you run a Shopify store and want cart and browse abandonment texts
- Handy when you'd rather pay per message than a monthly platform fee
- Good for brands sending enough texts that a lower per-message rate starts to pay off
Who Postscript is not for
- Not for you if your store isn't on Shopify, as other stores need their own code to add its SDK
- Pricey if you want the API, which starts on Professional at $500 a month
- Skip it if you text only now and then, as the $49 minimum applies even in a quiet month
Why Postscript gets a 2.2
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyStarter has no platform fee, just a $49 monthly minimum spend. Texting 1,000 customers once at $0.009 per SMS stays inside that minimum, so $49 is the figure, plus US carrier fees averaging $0.0033 per SMS. That's the dear end of ordinary for this category.
- CFree plan and trialNo free plan, but a free trial with a $100 credit toward message and carrier fees for your first 30 days. That's a decent run at a first campaign.
- CFeaturesThe texting job done fully for a Shopify store: campaigns, cart and browse abandonment flows, popups, two-way replies and segments built on order data. But texting is one channel of this category, RCS waits for Enterprise and email is still a waitlist.
- CEase of useNo App Store rating on record. It plugs into Shopify, but you still set up opt-in popups, keywords and flows before the first text goes out.
- BPlatforms and integrationsRuns on the web, with Shopify, Klaviyo, Gorgias, Zendesk, Kustomer, Mailchimp, Omnisend and Triple Whale. API access waits for Professional at $500 a month, and there's no app.
What these grades rest on. Graded from this listing, whose facts were read from Postscript's own pages on 18 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/postscript#review"><img src="https://toolgpa.com/badge/postscript.svg" alt="Postscript: 2.2 GPA on ToolGPA" width="196" height="56"></a>Where Postscript stands among SMS and chat marketing tools
Postscript's GPA of 2.2 is higher than 2 of the 14 other SMS and chat marketing tools we grade, and level with 6.
It stands best on platforms and integrations (B, above 1 of 14) and worst on ease of use (C, above 0).
Its paid plans start at $49 a month, against a middle price of $26.59 for the category: 10 of the 13 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 3 tools score higher and cost less.
Each grade against the category
Every bar is all 15 SMS and chat marketing tools we grade, cut by the letter each got. Postscript’s own letter is outlined.
- CValue for moneyAbove 3 of 14, level with 6
- CFree plan and trialAbove 1 of 14, level with 13
- CFeaturesAbove 1 of 14, level with 7
- CEase of useAbove 0 of 14, level with 12
- BPlatforms and integrationsAbove 1 of 14, level with 13
Price against what you get
Each dot is one of 14 SMS and chat marketing tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Postscript, or make your own?
Keep it
To replace Postscript you would be making texts to thousands of numbers, registered with the carriers. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 6 of the 14 other SMS and chat marketing tools grade higher. It costs $588 a year.
What you could make
- Popups: an app builder makes this well.
What you could not
- Texts to thousands of numbers, registered with the carriers.
- Email sent in volume that still reaches the inbox.
- It plugs into other products, Shopify, Klaviyo and Gorgias among them, and has an API.
- AI features, unless you pay a model provider for each request yourself.
What this rests on. Postscript’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Postscript?
Postscript is a text message marketing platform built around Shopify stores. It sends SMS, MMS and RCS campaigns and automated flows such as cart and browse abandonment, grows the list with popups and checkout opt-ins, and segments subscribers on Shopify order data. Plans set a monthly platform fee and a per-message rate, and email is opening through a waitlist.
Postscript is a paid product with a free trial, starting at $49 per month minimum spend on messages, with no platform fee. See every plan
Good for
- Shopify stores starting or growing an SMS list
- Ecommerce brands that want cart and browse abandonment texts
- Brands sending enough texts that a lower per-message rate pays off
Worth knowing
- Every text is billed on top of the plan: $0.009 per SMS on Starter down to $0.007 on Professional, plus US carrier fees that average $0.0033 per SMS and $0.00799 per MMS.
- Built for Shopify; other stores can add Postscript's popups and opt-in checkbox through an SDK in their own code.
- A dedicated short code costs $750 a month, passed through from the carriers; the toll-free number is free.
- API access and removing "Powered by Postscript" from opt-ins start at Professional, at $500 a month.
Key features
- Flow builder with templates
- Automations for cart and browse abandonment, welcome series, upsells and shipping updates, included on every plan.
- Subscriber acquisition
- Popups, checkout collection, onsite opt-in, forms and keywords, with Starter limited to 2 opt-in keywords and higher plans unlimited.
- Shopify segmentation
- Segments built from Shopify order data and third-party integrations, with reports on subscribers, revenue and message performance.
- Two-way texting
- Reply to subscribers who text back, and pass conversations to help desks such as Gorgias, Zendesk and Kustomer.
- RCS messages
- Rich messages from a branded profile alongside SMS and MMS; on the plans page RCS is an option on Enterprise.
- Postscript AI plan
- A $699 a month bundle sold through sales, with on-brand AI messages, large-scale message testing and AI-driven one-to-one journeys.
Postscript pricing
- Starts at
- $49 per month minimum spend on messages, with no platform fee
- Free plan
- None
- Free trial
- Free trial with a $100 credit toward message and carrier fees for the first 30 days
| Plan | Price | What you get |
|---|---|---|
| Starter | $49per month minimum spend on messages, with no platform fee | Shown as $0 a month with a $49 monthly minimum spend. $0.009 per SMS and $0.045 per MMS, 2 opt-in keywords, a toll-free number, campaigns and flows. |
| Growth | $100per month, plus messages | $0.008 per SMS and $0.03 per MMS, unlimited opt-in keywords, and live chat and email support. |
| Professional | $500per month, plus messages | $0.007 per SMS and $0.024 per MMS, enhanced analytics, priority support, API access, and no "Powered by Postscript" on opt-ins. |
| Enterprise | Custom | Custom pricing with a customer success manager, personalized product recommendations, data warehouse push and the option to add RCS. |
Read from postscript.io on Oct 18, 2026. Prices change, so confirm with Postscript before you buy.
Works with
Postscript alternatives
- Postscript vs Klaviyo
Free plan · from $20/mo
- Postscript vs SimpleTexting
Free trial · from $23.20/mo
- Postscript vs Omnisend
Free plan · from $16/mo
- Postscript vs SlickText
Free trial · from $24.17/mo
Common questions
Is Postscript free?
No, Postscript is a paid product, but you can try it first. Free trial with a $100 credit toward message and carrier fees for the first 30 days.
How much does Postscript cost?
Postscript lists 4 plans. Starter: $49 per month minimum spend on messages, with no platform fee. Growth: $100 per month, plus messages. Professional: $500 per month, plus messages. Enterprise: custom pricing. Prices were read from postscript.io on Oct 18, 2026.
What platforms does Postscript work on?
Postscript is available on Web.
Does Postscript have an Android app?
No Android app was listed when its pages were read on Oct 18, 2026. Postscript is listed for Web.
Does Postscript have an iPhone app?
No iPhone app was listed when its pages were read on Oct 18, 2026. Postscript is listed for Web.
Is Postscript open source?
Postscript is not described as open source on its own site, as read on Oct 18, 2026.
Does Postscript have an API?
Yes. Postscript offers a public API, according to its own site.
What does Postscript integrate with?
Postscript's listing names Shopify, Klaviyo, Gorgias, Zendesk, Kustomer, Mailchimp, Omnisend and Triple Whale. A listing names up to eight integrations, so it may connect to more.
Who makes Postscript?
Postscript is made by Postscript.
What are the alternatives to Postscript?
The closest alternatives to Postscript in our directory are Attentive, Klaviyo, SimpleTexting, Omnisend and SlickText. Each one has a side-by-side comparison with Postscript.
How does Postscript compare with other SMS and chat marketing tools?
Postscript's GPA of 2.2 is higher than 2 of the 14 other SMS and chat marketing tools we grade, and level with 6. It stands best on platforms and integrations (B, above 1 of 14) and worst on ease of use (C, above 0).
Is Postscript good value for money?
ToolGPA grades Postscript C for value for money. Its paid plans start at $49 a month, against a middle price of $26.59 for the category: 10 of the 13 others that charge start lower. On features, ease of use and platforms it scores 2.3 out of 4. 3 tools score higher and cost less.
Could I make my own version of Postscript?
To replace Postscript you would be making texts to thousands of numbers, registered with the carriers. That is not a weekend's work, with an AI app builder or without one. That makes this kind of software worth paying for, not this one in particular: 6 of the 14 other SMS and chat marketing tools grade higher. It costs $588 a year. What you could not make: Texts to thousands of numbers, registered with the carriers. Email sent in volume that still reaches the inbox. It plugs into other products, Shopify, Klaviyo and Gorgias among them, and has an API. AI features, unless you pay a model provider for each request yourself. This is a judgement from its listing. We have not built one.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 18, 2026.