The part that deserves more attention is what happens after the app says it is connected. Klaviyo needs Shopify data to do the work most stores expect from it: recognize customers, use purchase history, support behavior-based segments, and trigger ecommerce flows later. Without that foundation, you can still design emails, but your setup will not have much store context behind it. We’ll walk through what the Klaviyo Shopify integration does, what to check before connecting, how to connect Klaviyo to Shopify, what data can sync, and how to confirm that the connection is actually working. Once the integration is live, you can move on to signup forms, welcome emails, abandoned cart recovery, back-in-stock alerts, and the rest of your Shopify email setup.