Klaviyo is a data-driven email and marketing automation platform designed to provide personalized marketing tools for e-commerce businesses. By integrating with e-commerce platforms and CRM systems, Klaviyo tracks customer behavior, analyzes data, and automates the sending of personalized emails and messages, thereby increasing sales and boosting customer engagement. Klaviyo's features include abandoned cart reminders, customer segmentation, personalized recommendations, A/B testing, and more. Pricing is based on email sends and subscriber count, catering to businesses of all sizes.