The 10 Best Post Script Apps for Shopify

The top 10 apps merchants see when they search the Shopify App Store for post script, in the exact order the store ranks them. Only Shopify's organic ranking is shown, never sponsored ads.

Updated September 8, 2026 · Organic ranking

Maintained by Rankbase, built by a Shopify app developer

Shopify treats SMS consent as its own thing rather than a variation on email, and the detail is more useful than it sounds. A customer's SMS marketing state is one of a documented set that includes pending as well as subscribed and unsubscribed, so a half-finished opt-in is a state you can see rather than a gap. The phone number itself is stricter than an email address: it is stored in international format and the same number cannot be assigned to two customers, which quietly turns your list into something with a hard edge on it. And no phone number on the account means no message, whatever the consent record says.

The other native detail worth knowing is at checkout, where Shopify provides a consent checkbox component and documents that only the SMS marketing policy is supported by it. There is no equivalent for email. That makes checkout the one place where SMS opt-in is a first-class, platform-supported moment rather than something an app has bolted on, and it is worth asking any vendor whether they use it.

1

Postscript SMS Marketing

★ 4.7 (1,206 reviews) · Free to install

Build incremental revenue and scale relationships with SMS
2

Aftersell Post Purchase Upsell

★ 4.8 (1,025 reviews) · Free plan available

Lift AOV with 1-Click Checkout Upsells & Thank You Page Offers
Built for Shopify
3

Kaching Post Purchase Upsell

★ 5.0 (344 reviews) · Free plan available

Boost AOV via 1-click Checkout upsells & Thank You page offers
Built for Shopify
4

XCOTTON Post Purchase Guard

★ 5.0 (609 reviews) · Free

Solutions of shipping protection, return and extended warranty
5

EZLabel: Australia Post Ship

★ 5.0 (835 reviews) · Free to install

MyPost Business shipping labels made simple!
6

Grapevine Post Purchase Survey

★ 5.0 (219 reviews) · Free trial available

Post purchase, NPS & attribution surveys, unlimited responses
Built for Shopify
7

Hyve ‑ Post to Xero

★ 5.0 (45 reviews) · Free trial available

Automate bookkeeping of sales and accounting to Xero
Built for Shopify
8

ChatGPT AI Product Description

★ 4.9 (527 reviews) · Free plan available

Generate SEO Friendly Product Descriptions With ChatGPT - Bulk
Built for Shopify
9

Outfy ‑ Social Media Auto Post

★ 4.8 (566 reviews) · Free plan available

Auto-Create AI Videos, Promos & Auto-Post to Social Media
10

AOV.ai Post Purchase Upsell

★ 4.9 (159 reviews) · Free plan available

Increase AOV with Post Purchase Upsell & Thank you page offers
Built for Shopify

Compare the top 3 head-to-head

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What to look for in a Post Script app

Where the opt-ins come from: Checkout, a popup, a keyword reply, a form: each produces consent of a different quality and a different volume. The valuable ones leave a record you can point at later, showing when and where somebody agreed. Ask what the app writes back to the customer record, because that is what survives if you ever change vendors.
The registration you will have to do yourself: Sending marketing texts means a sender your carrier recognizes, and that process, its paperwork and its wait, belongs to the messaging provider rather than to Shopify. Find out what the app requires of you before your first send, since this is where launches slip by weeks.
What a message actually costs: Per-message pricing, per-country rates, whether images or links cost more, and what happens to your bill when a campaign goes to the whole list are the numbers that decide this purchase. Compare them like a phone bill, not like a software subscription.
Whether replies reach a human: A text invites an answer, and some of your customers will send one. Two-way messaging, where a person can pick up the conversation, is the difference between a channel and a broadcast, and only some of these listings offer it.
Suites that also do email: Several results here are email platforms with SMS attached. That can be the right answer, since one contact record and one automation builder beats two. Judge the SMS half on its own merits though: sender setup, deliverability by country, and whether the flows treat a text as a text rather than a short email.

Frequently asked questions

Which is the best Post Script app for Shopify?

Based on the Shopify App Store's own organic ranking for "post script", Postscript SMS Marketing currently holds the #1 spot, with a 4.7 star rating across 1,206 reviews. The best choice for your store still depends on your requirements, so compare the top results above.

How is this ranking determined?

We record the organic results merchants actually see when searching the Shopify App Store for "post script", refreshed daily. Shopify's own sponsored ("Ad") results are excluded, so positions reflect its real search ranking rather than paid promotion. Source: the Shopify App Store search results for "post script", you can verify the current ranking there yourself.

Which Post Script apps are Built for Shopify?

6 of the top 10 post script apps hold the Built for Shopify badge: Aftersell Post Purchase Upsell, Kaching Post Purchase Upsell, Grapevine Post Purchase Survey, Hyve ‑ Post to Xero, ChatGPT AI Product Description and more.

What does the Built for Shopify badge mean?

Built for Shopify
Built for Shopify is the highest level of recognition Shopify awards an app. To earn the badge, an app must meet Shopify's standards for safety, performance, ease of use, and proven usefulness: it cannot slow down the admin, storefront, or checkout, must integrate seamlessly into the Shopify admin, and must demonstrate quality through installs, reviews, and ratings over time. When comparing similar apps, preferring ones with the badge is a safe default. Learn more about the Built for Shopify badge →

As of September 8, 2026, the top-ranked post script app on the Shopify App Store is Postscript SMS Marketing, with a 4.7 star rating across 1,206 reviews. 6 of the top 10 carry the Built for Shopify badge, and the average rating is 4.9 stars across 5,535 reviews.

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Rankbase is made by Craftshift, a Shopify Partner building apps for product images, variants, and bulk catalog work. We built Rankbase to track the App Store rankings of our own apps first, then opened it to other developers, and this directory grew out of that work. The rankings on these pages are Shopify's own organic search results; we never edit them, including for our own apps.

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