Klaviyo, Inc. is a technology company offering a software-as-a-service (SaaS) platform that empowers its clients to send highly targeted and pertinent messages via email, text message (SMS), and push notifications. The firm's primary product, Klaviyo, is a marketing automation platform engineered for personalized outreach. Its comprehensive suite of solutions includes an email marketing tool that meticulously monitors clicks and purchases to enhance campaign effectiveness; an SMS service crafted for fostering e-commerce expansion and customer loyalty; and a mobile push feature for direct engagement with users through lock screen alerts.