Klaviyo vs Postscript SMS: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Klaviyo and Postscript SMS side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Klaviyo leads on lower entry price; Postscript SMS leads on higher user rating. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Klaviyo
Email marketing for e-commerce
Best for you if:
- • You want e-commerce focused
Postscript SMS
Transform your SMS strategy with AI that learns, adapts, and generates higher ROI for Shopify brands.
Best for you if:
- • You want deep integration with Shopify ecosystem
| At a Glance | Klaviyo | |
|---|---|---|
Starts at | Free plan, paid from $20/mo, billed monthly Email plan | Free plan, paid from $100/mo, billed monthly Growth plan |
Category | Marketing Automation Email Marketing | E-commerce Marketing Automation |
Rating | 4.6/5 G2 4.6 · Capterra 4.6 1,901 reviews | 4.8/5 G2 4.8 161 reviews |
Free plan | Yes | Yes |
Watch out for | Since Feb 2025, you pay for ALL active profiles, not just contacts you email. Imported but unengaged contacts still count toward billing | n/a |
Choose Klaviyo or Postscript SMS?
Choose Klaviyo if
- You want e-commerce focused
- You want powerful segmentation
- Budget matters ($20/mo, billed monthly vs $100/mo, billed monthly)
- You work in marketing automation, not e-commerce
Choose Postscript SMS if
- You want deep integration with Shopify ecosystem
- You want high ROI on SMS spend (average 34x reported)
- You work in e-commerce, not marketing automation
In-Depth Analysis
Klaviyo
Email marketing for e-commerce
Since February 2025, billing is based on total active profiles (not just emailed contacts), which effectively raised prices for most users.
Watch out
Since Feb 2025, you pay for ALL active profiles, not just contacts you email. Imported but unengaged contacts still count toward billing
Strengths
- Pro: E-commerce focused
- Pro: Powerful segmentation
- Pro: Revenue attribution
Weaknesses
- Con: Expensive at scale
- Con: Learning curve
Key features
Postscript SMS
Transform your SMS strategy with AI that learns, adapts, and generates higher ROI for Shopify brands.
Postscript SMS offers a fair pricing structure, especially with its generous Starter tier at $0/mo for essential features.
Strengths
- Pro: Deep integration with Shopify ecosystem
- Pro: High ROI on SMS spend (average 34x reported)
- Pro: AI-driven optimization for campaigns and automations
- Pro: Fast subscriber list growth tools
- Pro: Strong focus on SMS compliance and legal protection
Weaknesses
- Con: Primarily focused on Shopify, may not be suitable for other e-commerce platforms
- Con: Specific pricing details are not publicly available, requiring a demo
Key features
Plans and prices: Klaviyo vs Postscript SMS
| Tool | Plans and prices | Source |
|---|---|---|
| Klaviyo |
| klaviyo.com/pricing read Oct 5, 2026 |
| Postscript SMS |
| postscript.io/pricing read Nov 1, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Klaviyo pricing and Postscript SMS pricing.
Key Takeaways
Klaviyo
- Lower entry price: $20/mo, billed monthly vs $100/mo, billed monthly
Postscript SMS
- Higher user rating: 4.8/5 vs 4.6/5
What the data shows
On the data below, Klaviyo leads on lower entry price; Postscript SMS leads on higher user rating. We do not name an overall winner for this pair.
- Postscript SMS has the higher user rating (4.6/5 from 1,901 reviews for Klaviyo, 4.8/5 from 161 reviews for Postscript SMS).
- Klaviyo has the lower entry price: $20/mo, billed monthly (Email) against $100/mo, billed monthly (Growth) for Postscript SMS.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Klaviyo and Postscript SMS compare in 2026?
On the data below, Klaviyo leads on lower entry price; Postscript SMS leads on higher user rating. We do not name an overall winner for this pair. Postscript SMS has the higher user rating (4.6/5 from 1,901 reviews for Klaviyo, 4.8/5 from 161 reviews for Postscript SMS). Klaviyo has the lower entry price: $20/mo, billed monthly (Email) against $100/mo, billed monthly (Growth) for Postscript SMS. Both have a free plan.
What are Klaviyo and Postscript SMS used for?
Klaviyo: Email marketing for e-commerce. Postscript SMS: Transform your SMS strategy with AI that learns, adapts, and generates higher ROI for Shopify brands.
What does Klaviyo cost vs Postscript SMS?
Klaviyo's cheapest paid plan is Email at $20/mo, billed monthly; it also has a free plan. Postscript SMS's cheapest paid plan is Growth at $100/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Nov 1, 2026.
What's the main difference between Klaviyo and Postscript SMS?
Klaviyo's main strength: e-commerce focused. Postscript SMS's main strength: deep integration with Shopify ecosystem.