Klaviyo is an ecommerce email and SMS marketing platform used by many Shopify brands. It is known for advanced segmentation, automation workflows, and detailed revenue tracking. The platform positions itself as a data-driven growth engine for online stores. Klaviyo integrates deeply with Shopify. It tracks customer behavior, purchase activity, and engagement data in real time. This allows brands to build complex automation flows. However, complexity is part of the package. Kl