Klaviyo vs Stamped.io: 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 Stamped.io side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Klaviyo leads on higher user rating and lower entry price. 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 a free tier before you commit
Stamped.io
Turn one-time buyers into repeat customers with connected Lifecycle, Loyalty, and Reviews experiences.
Best for you if:
- • You want review platform
| At a Glance | Klaviyo | Stamped.io |
|---|---|---|
Starts at | Free plan, paid from $20/mo, billed monthly Email plan | Free plan, paid from $23/mo, billed monthly Basic plan |
Category | Marketing Automation Email Marketing | E-commerce Loyalty Programs |
Rating | 4.6/5 G2 4.6 · Capterra 4.6 1,901 reviews | 3.7/5 Capterra 4.5 · G2 4.6 · Trustpilot 1.9 91 reviews |
Free plan | Yes | No |
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 | Overage fees if exceeding order limits |
Choose Klaviyo or Stamped.io?
Choose Klaviyo if
- You want a free tier before you commit
- You want e-commerce focused
- You want powerful segmentation
- Budget matters ($20/mo, billed monthly vs $23/mo, billed monthly)
- You work in marketing automation, not e-commerce
Choose Stamped.io if
- You want review platform
- You want good for Shopify
- 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
Stamped.io
Turn one-time buyers into repeat customers with connected Lifecycle, Loyalty, and Reviews experiences.
Stamped.io offers a fair pricing structure, especially with its generous free 'Lite' tier for small businesses.
Watch out
Overage fees if exceeding order limits
Strengths
- Pro: Review platform
- Pro: Good for Shopify
- Pro: UGC features
- Pro: Active development
- Pro: Fair pricing
Weaknesses
- Con: Per-order pricing
- Con: E-commerce focused
- Con: Feature gaps
- Con: Better alternatives exist
- Con: Learning curve
Key features
Plans and prices: Klaviyo vs Stamped.io
| Tool | Plans and prices | Source |
|---|---|---|
| Klaviyo |
| klaviyo.com/pricing read Oct 5, 2026 |
| Stamped.io |
| stamped.io/pricing read Oct 4, 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 Stamped.io pricing.
Key Takeaways
Klaviyo
- Higher user rating: 4.6/5 vs 3.7/5
- Lower entry price: $20/mo, billed monthly vs $23/mo, billed monthly
Stamped.io
- Choose if you want turn one-time buyers into repeat customers with connected Lifecycle, Loyalty, and Reviews experiences
What the data shows
On the data below, Klaviyo leads on higher user rating and lower entry price. We do not name an overall winner for this pair.
- Klaviyo has the higher user rating (4.6/5 from 1,901 reviews for Klaviyo, 3.7/5 from 91 reviews for Stamped.io).
- Klaviyo has the lower entry price: $20/mo, billed monthly (Email) against $23/mo, billed monthly (Basic) for Stamped.io.
- 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 Stamped.io compare in 2026?
On the data below, Klaviyo leads on higher user rating and lower entry price. We do not name an overall winner for this pair. Klaviyo has the higher user rating (4.6/5 from 1,901 reviews for Klaviyo, 3.7/5 from 91 reviews for Stamped.io). Klaviyo has the lower entry price: $20/mo, billed monthly (Email) against $23/mo, billed monthly (Basic) for Stamped.io. Both have a free plan.
What are Klaviyo and Stamped.io used for?
Klaviyo: Email marketing for e-commerce. Stamped.io: Turn one-time buyers into repeat customers with connected Lifecycle, Loyalty, and Reviews experiences.
What does Klaviyo cost vs Stamped.io?
Klaviyo's cheapest paid plan is Email at $20/mo, billed monthly; it also has a free plan. Stamped.io's cheapest paid plan is Basic at $23/mo, billed monthly. Prices read on the vendors' pricing pages, latest check Oct 5, 2026.
What's the main difference between Klaviyo and Stamped.io?
Klaviyo's main strength: e-commerce focused. Stamped.io's main strength: review platform.