Klaviyo provides e-mail marketing software for online sellers. It provides personalized newsletters to automated emails like abandoned carts, order follow-ups, etc. It helps businesses to create marketing channels from email, SMS, web, and in-app. It tracks customer's behavior on websites and makes a profile for personalized targeting for eCommerce and SaaS applications with customized templates and a drag-and-drop email builder. The clients of the company include Chubbies, Huckberry, etc. The solution can be integrated onto platforms like BigCommerce, Magento, Shopify, ShopifyPlus, WooCommerce, and more.