Customers.ai vs Postscript (2026): which should you pick?
As of Nov 12, 2026, Postscript grades higher than Customers.ai: 2.2 against 2.0 out of 4.0.
Checked Oct 18, 2026 and Nov 12, 2026 · graded Oct 18, 2026 and Nov 12, 2026 by ToolGPA
Postscript grades higher on features. They get the same grade on value for money, the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Customers.ai
Website visitor identification and audience tools for Klaviyo brands
Postscript
SMS and RCS marketing for Shopify stores, billed per message sent
Which one is for you
Pick Customers.ai if
- Fits if you run a Shopify store on Klaviyo and want to identify anonymous visitors
- Works for email marketers who want more addresses for the same traffic
Look elsewhere if
- Not for you if you want a chatbot or messaging tool, as the current site centres on visitor identification
- Skip it if you want a fixed price, since cost follows your total Klaviyo profiles, suppressed ones included
- Watch out: the trial is only 7 days and capped at 500 visitor resolutions
- Watch out: the pricing page advertises a 4x ROI guarantee we could not check
Pick Postscript if
- Fits if you run a Shopify store and want cart and browse abandonment texts
- Works for stores that would rather pay per message than a monthly platform fee
Look elsewhere if
- 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 or to drop "Powered by Postscript", which start 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
- Pricey if you want a dedicated short code, at $750 a month passed through from the carriers
- Watch out: RCS waits for Enterprise, email is still a waitlist, and carrier fees average $0.0033 per SMS on top
How we grade them
| 2.0GPACustomers.aiFair | 2.2GPAPostscriptFair | |
|---|---|---|
| Value for money | CNo fixed plan price appears; a calculator keyed to total Klaviyo profiles sets it, so it sits at the middle of the category. | CStarter 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 | CA 7-day free trial with no credit card and up to 500 visitor resolutions. No free plan. | CNo free plan, but a free trial with a $100 credit toward message and carrier fees for your first 30 days. |
| Features | DIts listed features are visitor identification, an audience agent, email deliverability and conversion tools, which are not the chat marketing job its category is about. | CThe 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 | CNo store rating on record. It needs your site tagged and Klaviyo, Shopify or ad accounts connected. | CNo 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 | BWeb only, with Klaviyo, Shopify, Meta and Google Ads, plus a developer API. | BRuns 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. |
| Best for | identifying website visitors for Klaviyo email | SMS marketing for Shopify stores |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Customers.ai and Postscript. How we grade
Where they differ
- Customers.ai also covers web analytics.
- Postscript also covers sMS marketing and popups.
At a glance
| Customers.ai | Postscript | |
|---|---|---|
| Pricing | Free trial | Free trial |
| Starts at | Not published | $49 per month minimum spend on messages, with no platform fee |
| Free plan | None | None |
| Free trial | 7-day free trial, no credit card required; up to 500 visitor resolutions during the trial. | Free trial with a $100 credit toward message and carrier fees for the first 30 days |
| Web | ||
| Made by | Customers.ai | Postscript |
| Price read from | Not confirmed | postscript.io |
| Checked | Nov 12, 2026 | Oct 18, 2026 |
Worth knowing
Customers.ai
- The pricing page prices by a calculator keyed to total Klaviyo profiles, including suppressed and unsubscribed ones; no fixed plan prices appear in the page text.
- Despite its listing under chat marketing, the current site centers on visitor identification for email and ads rather than chat.
- The site advertises a 4x ROI guarantee on its pricing page.
Postscript
- 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
Customers.ai
- Website visitor identification
- An X-Ray pixel added to a site resolves anonymous visitors so they can be reached in Klaviyo.
- AI audience agent
- Alfred is an AI audience agent that builds purchase-intent audiences from a store's data.
- Email deliverability suite
- Tools aimed at inbox placement for a brand's email.
- Super CAPI
- Server-side tracking for Meta Ads that the site says works around ad blockers and iOS restrictions.
- Developer API
- Identify visitors in the browser or on the server and enrich a CRM.
Postscript
- 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.
Plans
Customers.ai
Pricing could not be confirmed. See customers.ai.
Postscript
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.
EnterpriseCustom
Custom pricing with a customer success manager, personalized product recommendations, data warehouse push and the option to add RCS.
Common questions
Which is cheaper, Customers.ai or Postscript?
As of Nov 12, 2026, Customers.ai has no price we could confirm, and Postscript starts at $49 per month minimum spend on messages, with no platform fee.
Which has a free plan, Customers.ai or Postscript?
As of Nov 12, 2026, neither Customers.ai nor Postscript has a free plan. Both have a free trial.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.