Klaviyo Sell more by using data to drive your marketing Klaviyo makes it easy for ecommerce marketers to target, personalize, measure and optimize email and Facebook campaigns. And it only takes a few minutes to get started. INTEGRATE KLAVIYO WITH GRAVITY FORMS If you use Klaviyo email service and the Gravity Forms plugin, you’re going to want this plugin! Integrate your Gravity Forms forms so that when users submit a form entry, the entries get added to Klaviyo. Link Email, First Name, Last Name with Klaviyo!