Side-by-side comparison
Postscript vs Klaviyo
Compare Postscript and Klaviyo across pricing, features, and fit for your e-commerce stack.
Quick Comparison
About
Postscript
Postscript is the SMS marketing platform built exclusively for Shopify, which means the integration is native rather than bolted on. Subscriber segmentation pulls directly from Shopify order data, compliance is handled by default, and two-way conversational texting lets your support and sales team engage in real threads rather than broadcast blasts. The focus is narrow by design: if you also want email in the same tool, look at Klaviyo. But if SMS is your primary retention channel and you are on Shopify, Postscript is the most operator-friendly option in the market. Pricing scales with subscriber count, and the free tier is generous enough to validate the channel before committing.
Klaviyo
Few platforms have done more to raise the bar for e-commerce email marketing than Klaviyo. What sets it apart from generic email tools is its deep Shopify integration and predictive analytics layer. It can identify customers likely to churn before they actually do, then enrol them in the right retention flow automatically. Segmentation is genuinely powerful: you can slice your list by purchase behaviour, predicted LTV, or browsing history without writing a single line of code. It's the default choice for most serious Shopify brands, though smaller stores should be aware the pricing scales steeply with list size.
Key Features
Postscript
Shopify-Native Data
Direct integration pulls Shopify order history, customer tags, and purchase data into every subscriber profile for precise segmentation.
Two-Way Texting
Subscribers can reply to campaigns and receive real responses from your team, making SMS a genuine conversation channel rather than a broadcast.
Compliance Engine
Automated opt-in confirmation, quiet hours enforcement, TCPA compliance checks, and keyword opt-outs are built into every send by default.
Subscriber Segmentation
Slice your list by Shopify data — purchase count, product bought, LTV, order value, or last active date — for hyper-targeted campaigns.
Klaviyo
Predictive Analytics
Forecasts CLV, churn risk, and next purchase date per customer so you can act before revenue walks out the door.
Smart Segmentation
Auto-segments based on real-time Shopify behaviour and purchase history. No manual list-building required.
AI-Powered Flows
Pre-built and AI-suggested flows for abandoned cart, winback, and post-purchase, ready to launch in minutes.
Revenue Attribution
Tracks exact revenue driven by every email, SMS, and automation flow so you know what is actually working.
Screenshots
Postscript
Klaviyo
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