Klaviyo

Klaviyo is a marketing automation and customer data platform aimed at consumer businesses. It unifies shopper data from ecommerce stores and other sources, then uses it to power targeted email, SMS, push notifications, and other messaging from a single system.

The platform is built primarily for online retailers and direct-to-consumer brands, with deep integrations for Shopify and similar storefronts. Its key strengths are real-time segmentation, prebuilt automation flows for scenarios like abandoned carts and win-backs, and analytics that tie campaigns directly to revenue. Newer additions extend it toward reviews, customer service, and AI-assisted personalization.

Founded in 2012 and based in Boston, Klaviyo became a publicly traded company in 2023. Pricing scales with the number of contacts and channels used, and a free tier lets smaller senders start before upgrading to paid plans.