The Postscript Insider’s Guide
Everything we know about Postscript in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Postscript
The Insider’s Guide
SMS and RCS marketing for Shopify stores, billed per message sent
Every plan, grade, refund rule and rival among SMS and chat marketing tools, read from Postscript’s own pages.
Made by Postscript · checked Oct 18, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Postscript’s own pages, its app-store listings and our grades. Every fact in it is on Postscript’s page too, where it is kept up to date. Checked Oct 18, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.2
GPA, above 2 of the 14 other SMS and chat marketing tools we grade
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.
To get you started, here are 9 things to know about Postscript, taken from its own pages and our grades.
It's a neat fit for a Shopify store, and an awkward one for anyone else.
- 1
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.
- 2
Paid plans start at $49 a month
As its pricing page puts it: $49 per month minimum spend on messages, with no platform fee.
- 3
You can try it first
Free trial with a $100 credit toward message and carrier fees for the first 30 days
- 4
It runs on Web
Web.
- 5
Flow builder with templates
Automations for cart and browse abandonment, welcome series, upsells and shipping updates, included on every plan.
- 6
Subscriber acquisition
Popups, checkout collection, onsite opt-in, forms and keywords, with Starter limited to 2 opt-in keywords and higher plans unlimited.
- 7
Shopify segmentation
Segments built from Shopify order data and third-party integrations, with reports on subscribers, revenue and message performance.
- 8
A 2.2 GPA, above 2 of 14
That is against the other SMS and chat marketing tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
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.
Postscript at a glance
- Pricing
- Free trial, from $49 per month minimum spend on messages, with no platform fee
- Free plan
- No
- Free trial
- Free trial with a $100 credit toward message and carrier fees for the first 30 days
- Runs on
- Web
- Made by
- Postscript
- Category
- SMS & Chat Marketing
- Our grade
- 2.2 GPA, fair
The report card
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.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | Starter 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. |
| Free plan and trial | C | No 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. |
| Features | C | The 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. |
| Ease of use | C | No 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. |
| Platforms and integrations | B | Runs 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. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
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 it 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
Good to know
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.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$49
A month to start
Postscript is a paid product with a free trial, starting at $49 per month minimum spend on messages, with no platform fee.
That's the dear end of ordinary for this category.
Starter
$49
per 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
$100
per month, plus messages
$0.008 per SMS and $0.03 per MMS, unlimited opt-in keywords, and live chat and email support.
Professional
$500
per 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.
Trying it first
Free trial with a $100 credit toward message and carrier fees for the first 30 days
Read from postscript.io on Oct 18, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
SMS and RCS marketing for Shopify stores, billed per message sent. Here is what it does, as its own site describes it, and what it covers: public API, AI features, marketing automation, sMS marketing, popups.
But texting is one channel of this category, RCS waits for Enterprise and email is still a waitlist.
- 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.
Where it runs
- Web
What it works with
- Shopify
- Klaviyo
- Gorgias
- Zendesk
- Kustomer
- Mailchimp
- Omnisend
- Triple Whale
Postscript is made by Postscript.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
2/14
Other SMS and chat marketing tools it is graded above
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
- CFree plan and trialAbove 1 of 14
- CFeaturesAbove 1 of 14
- CEase of useAbove 0 of 14
- BPlatforms and integrationsAbove 1 of 14
Price against what you get
Each dot is one of 14 SMS and chat marketing tools. Further left costs less; higher up scores better on features, ease of use and platforms. Postscript is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
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.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Attentive, Klaviyo, SimpleTexting, Omnisend and SlickText
The 5 tools Postscript is most often weighed against, with where each one differs from it.
- 2.0GPA
Attentive
Paid
SMS, email, RCS and push marketing for retail brands, sold by quote.
- Attentive also covers email campaigns.
- 2.4GPA
Klaviyo
Free plan · from $20/mo
Email, text and push marketing built on online-store customer data.
- Klaviyo has a free plan. Postscript does not, though it has a free trial.
- Postscript also covers sMS marketing and popups.
- Klaviyo also covers forms, reports and email campaigns.
- 2.4GPA
SimpleTexting
Free trial · from $23.20/mo
SMS marketing and two-way texting priced by monthly message credits.
- Only SimpleTexting lists iOS and Android apps.
- Postscript also covers popups.
- SimpleTexting also covers forms and business texting.
- 2.4GPA
Omnisend
Free plan · from $16/mo
Email, SMS and push marketing for online stores, priced by contacts.
- Omnisend has a free plan. Postscript does not, though it has a free trial.
- Postscript also covers sMS marketing and popups.
- Omnisend also covers forms, reports and email campaigns.
- 2.2GPA
SlickText
Free trial · from $24.17/mo
SMS marketing with workflows and popups, every feature on every plan.
- Only SlickText lists iOS and Android apps.
- SlickText also covers forms and business texting.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
13
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
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.
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.
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.
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.
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.
Could I make my own version of Postscript?
To replace Postscript you would be making texts to thousands of numbers, registered with the carriers.
Where this guide comes from
The prices, plans, platforms and features were read from Postscript’s own pages on Oct 18, 2026, and the grades were given on Oct 18, 2026. 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.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Postscript. Prices change, so check postscript.io before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
2,281
Tools graded, in 73 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
ToolGPA is free to read. It may earn a commission from affiliate links and it works with sponsors, but anything paid for is labelled and no one can pay for a grade. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
2,281
tools graded
73
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Postscript, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/postscript
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Postscript: The Insider's Guide", checked Oct 18, 2026. https://toolgpa.com/tools/postscript
Know someone choosing between SMS and chat marketing tools?
Send them this guide: toolgpa.com/tools/postscript/guide
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See our other guides
The best-graded SMS and chat marketing tools after Postscript, each with an Insider's Guide of its own.
- SMS & Chat Marketing Insider's GuideEvery one of the 15 SMS and chat marketing tools we grade, compared
- Chatfuel Insider's GuideAI chatbots for WhatsApp, Instagram and Facebook with a usage wallet2.6 GPA
- Interakt Insider's GuideWhatsApp and Instagram marketing, inbox and chatbots for Indian brands2.6 GPA
- AiSensy Insider's GuideWhatsApp API for broadcasts, retargeting and click-to-WhatsApp ads2.4 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Postscript’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. ToolGPA uses affiliate links and may earn a commission from them, and it works with sponsors; anything paid for is labelled, and no one can pay for a grade. Postscript is a trademark of its owner, and this guide is not made, paid for or approved by Postscript. Prices and plans change: check postscript.io before you buy.