Klaviyo, Inc. provides a cloud-based software-as-a-service platform in the United States, rest of the Americas, the Asia-Pacific, the United Kingdom, rest of Europe, the Middle East, and Africa. The company offers Klaviyo business-to-consumer (B2C) CRM, a unified platform that combines marketing, service, and analytics into a single system. It also provides Klaviyo Data Platform (KDP), which offer tools to unify, enrich, transform data, run more advanced reporting and predictive analysis, and sync data; Advanced KDP that provides an enhanced set of data capabilities; Marketing Agent, an AI-driven and autonomous marketing assistant designed to automate and accelerate marketing strategy, content creation, and campaign execution; Customer Agent, an AI-powered assistant that provides support and selling across digital channels; Klaviyo Social, which brings social interaction data into the company's unified consumer profiles; and Marketing Analytics that provide real-time AI-powered insights into consumer purchase. In addition, the company offers email marketing solutions comprising a range of customizable drag-and-drop templates, automated campaign and workflow capabilities, smart send time optimization, generative AI tools, and A/B testing; mobile messaging capabilities through text messaging, rich communication services, and WhatsApp; personalized push notifications; reviews add-on to collect product reviews, consumer data, and messaging; and integration, segmentation, automation, and analytics and benchmark features for its platform. Further, it provides Customer Hub, a consumer-facing portal that brings shopping, service, and personalization together in one place; and Helpdesk, an AI-powered workspace for managing consumer conversations across channels. The company serves entrepreneurs, small and medium-sized businesses, mid-market businesses, and enterprises. Klaviyo, Inc. was incorporated in 2012 and is headquartered in Boston, Massachusetts.