Klaviyo, Inc., a technology company that provides a software-as-a-service platform to enable its customers to send the right messages at the right time across email, short message service (SMS), and push notifications. The company offers Klaviyo, a marketing automation platform that sends personalized and targeted messages. Its products include email marketing solution to track every click and purchase to optimize campaigns; SMS, a text marketing solution for ecommerce growth and retention; and mobile push solution that reaches customers directly on their lock screen with mobile push notifications.