Klaviyo

Klaviyo is the default for serious online stores. Deep Shopify/WooCommerce integration, behavioral triggers (browse abandonment, post-purchase, win-back), predictive analytics and revenue-per-email reporting make it the tool that most directly ties email to sales. It's powerful — and priced accordingly as your list grows.

For ecommerce, no other tool converts data into revenue as effectively. The automations and segmentation are built specifically around how online stores make money.

Every place Klaviyo shows up across Choose My Stack — the research it’s part of and the articles that cover it.

The honest list