Klaviyo is a technology company based in Boston, Massachusetts, founded in 2012. It specializes in marketing automation, focusing on email and SMS marketing solutions tailored for e-commerce businesses. Klaviyo's platform helps brands build direct and personalized relationships with their customers through a robust customer relationship management (CRM) system.

The company offers a range of services, including email marketing automation, SMS marketing, and a customer data platform that centralizes customer information for precise targeting. Klaviyo also provides analytics and AI-driven insights to enhance marketing strategies and improve customer engagement. With approximately 143,000 merchants using its software, Klaviyo has established itself as a preferred partner for e-commerce platforms like Shopify.

Klaviyo has experienced significant growth, raising substantial funding and going public in 2023 with a valuation of $9.2 billion. The company continues to expand its capabilities and reach, localizing its platform in multiple languages to serve a diverse customer base, from startups to large enterprises.