Klaviyo vs Justuno
Side-by-side from the Top 11 rankings of The 11 Best Email Marketing Platforms for Ecommerce (2026) and The 11 Best Shopify Apps for Conversion Rate Optimization (2026). Last verified June 11, 2026.
The short answer
Klaviyo ranks higher on Top 11 (#1 vs #10) for Ecommerce brands running flows and campaigns / Shopify merchants improving funnel conversion. Unbeatable Shopify data integration for powerful segmentation.
At a glance
| Klaviyo | Justuno | |
|---|---|---|
| Top 11 rank | #1 / The 11 Best Email Marketing Platforms for Ecommerce (2026) | #10 / The 11 Best Shopify Apps for Conversion Rate Optimization (2026) |
| Score (out of 9.4) | 9.4 | 7.9 |
| Best for | Shopify power users | AI-powered personalized popups |
| Pricing | $$$ ($200 to $1,500+/mo) | $$ ($29 to $499+/mo) |
| HQ | Boston, USA | San Francisco, CA, USA |
| Founded | 2012 | 2010 |
Klaviyo
Unbeatable Shopify data integration for powerful segmentation.
www.klaviyo.comSee full entry in The 11 Best Email Marketing Platforms for Ecommerce (2026)
Justuno
An advanced platform for intelligent popups and personalized on-site promotions.
www.justuno.com/See full entry in The 11 Best Shopify Apps for Conversion Rate Optimization (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.