Klaviyo vs Postscript
We give Klaviyo a 2.4 GPA and Postscript a 2.2, out of 4.0. Klaviyo 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.
Klaviyo
Email, text and push marketing built on online-store customer data
Postscript
SMS and RCS marketing for Shopify stores, billed per message sent
How we grade them
| 2.4GPAKlaviyoFair | 2.2GPAPostscriptFair | |
|---|---|---|
| Value for money | C$20 a month for 500 active profiles, at the dearer end of what email tools start at, and $150 a month at 10,000. Texts and other mobile messages are billed per send on top, and the plan moves up by itself as your list grows. | 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 | CFree for 250 active profiles and 500 email sends a month, with $5 of mobile messages and $5 of Composer AI each month. Fine for setting up a new shop. Go over and sending stops until the next cycle or an upgrade. | CNo 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 | BShopper profiles fed by 350+ integrations, flows, campaigns, forms, product picks, SMS, WhatsApp and push, revenue reports and benchmarks. It covers the whole job for a store. Funnels and cohort reports need the Personalization add-on. | 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 App Store rating on record. Connecting your store and building flows and segments takes real setup in the web app, though the templates on every plan help. | 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, but 350+ integrations including Shopify, WooCommerce and Wix, plus ChatGPT and Claude, and an API. No desktop app is listed. | 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 | online stores that market from order data | 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: Klaviyo and Postscript. How we grade
Where they differ
- Klaviyo starts at $20 per month for up to 500 active profiles, billed monthly. Postscript starts at $49 per month minimum spend on messages, with no platform fee.
- Klaviyo has a free plan. Postscript does not, though it has a free trial.
- Klaviyo also covers forms, reports and email campaigns.
- Postscript also covers sMS marketing and popups.
At a glance
| Klaviyo | Postscript | |
|---|---|---|
| Pricing | Free plan | Free trial |
| Starts at | $20 per month for up to 500 active profiles, billed monthly | $49 per month minimum spend on messages, with no platform fee |
| Free plan | Up to 250 active profiles and 500 email sends a month, $5 of mobile messages and $5 of Composer usage a month, and email support for the first 60 days. | None |
| Free trial | None listed | Free trial with a $100 credit toward message and carrier fees for the first 30 days |
| Web | ||
| Made by | Klaviyo | Postscript |
| Price read from | klaviyo.com | postscript.io |
| Checked | Oct 17, 2026 | Oct 18, 2026 |
Who each one suits
Klaviyo
- Online stores, especially on Shopify, that market from order data
- Brands sending email and text messages from the same flows
- Teams that want segments and reports built on purchase history
Postscript
- 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
Klaviyo
- The Free plan stops at 250 active profiles and 500 sends a month; sending halts until the next cycle or an upgrade.
- Price follows active profiles, and accounts move automatically to a higher plan as the list grows.
- Text and other mobile messages cost extra per send, priced by destination with carrier fees included.
- Composer usage beyond the plan allowance is billed at $10 per 1,000 credits; paid support packages start at $500 a month.
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
Klaviyo
- Unified customer profiles
- Each shopper's browsing, order and engagement history sits in one profile, synced from more than 350 integrations and used for real-time segments.
- Flows and campaigns
- Email and flow templates, web sign-up forms and personalized product recommendations are on every plan, including Free.
- Mobile messaging
- SMS, MMS, WhatsApp, RCS and mobile push sit alongside email in the same flows, billed per message on top of the email plan.
- Composer AI agent
- Composer reviews flows, segments and forms and drafts campaigns from a prompt. Free accounts get $5 of usage a month; a $20 monthly add-on gives four times as much.
- Reports and benchmarks
- Dashboards, campaign revenue attribution and peer benchmarks on every plan. Funnels, cohort reports and custom attribution need the Personalization add-on.
- Customer service tools
- Customer Agent answers shopper questions with AI (first 50 resolutions free) and Helpdesk handles tickets, with a 30-day free trial.
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
Klaviyo
Free$0
250 active profiles, 500 email sends a month, $5 of mobile messages a month. Emails carry the Klaviyo logo.
Email$20
per month for up to 500 active profiles, billed monthly
5,000 sends a month, logo removed, generative AI and predictive analytics. Price rises with the list: $150 a month at 10,000 profiles.
EnterpriseCustom
Standard and Advanced packages priced by active profiles through sales, with sends bought separately by usage.
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.
Ways to pay less
Klaviyo
- Other savings
$19 off the first month of the Email plan
A one-time $19 credit on the first month of the $20 Email plan for accounts with no paid Klaviyo plan in the past 12 months. Valid through November 30, 2026.
Postscript
No public discounts listed.
