Klaviyo

Few platforms have done more to raise the bar for e-commerce email marketing than Klaviyo. What sets it apart from generic email tools is its deep Shopify integration and predictive analytics layer. It can identify customers likely to churn before they actually do, then enrol them in the right retention flow automatically. Segmentation is genuinely powerful: you can slice your list by purchase behaviour, predicted LTV, or browsing history without writing a single line of code. It's the default choice for most serious Shopify brands, though smaller stores should be aware the pricing scales steeply with list size.