The State of Ecommerce Email in 2026: What the Data Actually Shows About Klaviyo Performance

Most ecommerce brands believe their Klaviyo program is working. Data from 500+ accounts tells a different story. 83% score D or below. The median list is nearly 95% inactive. Revenue per email sent varies by 25x between top and bottom performers. Here are the six findings — and what the top 1% does differently.