Klaviyo vs Stamped: Complete Comparison (2026)
An in-depth comparison of Klaviyo and Stamped to help you choose the right tool for your business.
Last updated: November 2026
Klaviyo
6.9/10
Klaviyo is an email, SMS and customer data platform for ecommerce brands, priced by active profiles and built around store data and automated flows.
Stamped
6.3/10
Stamped is a product reviews, user-generated content, and loyalty platform that helps Shopify and other ecommerce brands gather social proof and drive repeat purchases.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.9/10 | 6.3/10 |
| Scalability | 8/10 | 6/10 |
| Ease of Use | 6/10 | 6/10 |
| Customization | 8/10 | 7/10 |
| Security | 7/10 | 5/10 |
| Support | 5/10 | 7/10 |
| Cost | 4/10 | 6/10 |
| Integration | 9/10 | 7/10 |
| Analytics | 9/10 | 5/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | $20/mo Email | $23/mo Reviews 200 orders (Shopify) |
| Estimated cost for 10 users | Free Free | $23/mo Reviews 200 orders (Shopify) |
| Features | ||
| E-commerce Features | ||
| Email Marketing | Not listed | |
| Landing Pages | Not listed | |
| Segmentation | Not listed | |
| SMS Marketing | Not listed | |
Klaviyo vs Stamped cost by team size
Klaviyo costs less at every team size we checked.
| Team size | Klaviyo | Stamped |
|---|---|---|
| 1 user | FreeFree | $23/moReviews 200 orders (Shopify) |
| 5 users | FreeFree | $23/moReviews 200 orders (Shopify) |
| 10 users | FreeFree | $23/moReviews 200 orders (Shopify) |
| 25 users | FreeFree | $23/moReviews 200 orders (Shopify) |
| 50 users | FreeFree | $23/moReviews 200 orders (Shopify) |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Klaviyo
- Has a free plan (Stamped does not)
- Lower estimated cost for 10 users: Free vs $23/mo
- Higher Analytics score (9/10 vs 5/10)
- Higher Scalability score (8/10 vs 6/10)
- Better fit for agencies (7/10 vs 4/10)
Why choose Stamped
- Higher Support score (7/10 vs 5/10)
- Higher Cost score (6/10 vs 4/10)
Pros & Cons
Klaviyo
Pros
- Deep native integration with Shopify and other stores lets marketers segment on real purchase and browsing data.
- A free plan with 250 profiles and a 20 USD entry plan make it cheap to start.
- Since July 2026, SMS uses dollar-based plans with over 70 tiers, so gaps between plans are smaller and larger plans get lower per-message rates.
- A broad product suite covering reviews, helpdesk, personalization and AI agents can replace several separate tools.
Cons
- Billing by active profiles and uneven tier steps cause cost jumps, for example from 150 USD at 10,000 profiles to 350 USD at 15,000 on the Email plan.
- Many features, such as Reviews, Helpdesk, Personalization and Composer, are separately priced add-ons that raise the total bill.
- Free accounts get email support only for the first 60 days, and reviewers on G2 and Trustpilot report slow or hard-to-reach support.
- New users report a learning curve with segments, event triggers and flow logic.
Stamped
Pros
- Rated 4.7 stars from about 3,700 reviews on the Shopify App Store, and 91 percent of those ratings are five stars.
- Review submissions can automatically award loyalty points, which links the reviews and loyalty programs.
- Reviews can be syndicated to Google Shopping, Meta, and the Shop App.
- Integrates with Klaviyo, Attentive, Omnisend, Gorgias, and Shopify Flow.
- Many merchants praise hands-on support and the free review migration.
Cons
- Merchants report slow or missing widgets, a backend that fails to load, and settings that reset.
- Some users report billing disputes, including charges after uninstalling, because billing can run outside Shopify.
- Prices on Stamped's site, which start at 199 dollars per month per product, are much higher than the entry Shopify listing, and pricing depends on order volume.
- Stamped does not run full email or SMS campaigns, so brands need a separate tool such as Klaviyo.
- Reviews and loyalty have historically been separate apps, which some users find confusing to set up.
Not sold on either?
Frequently Asked Questions
Klaviyo scores higher on our Marketing criteria: 6.9/10 against 6.3/10 for Stamped. The largest gap is in Analytics: 9/10 for Klaviyo and 5/10 for Stamped.
Klaviyo costs less for 10 users: free on its Free plan, against about $23/mo on its Reviews 200 orders (Shopify) plan for Stamped, billed monthly.
Klaviyo has a free plan; Stamped does not list one.
Klaviyo is the better fit for agencies: we rate it 7/10 for them, against 4/10 for Stamped.
