OneSignal is the market-leading customer messaging and engagement solution, offering email, mobile and web push notifications, in-app messaging, and SMS. Our powerful omnichannel platform enables 1M+ businesses to deliver over 1 B+ messages daily. Powered by superior architecture, OneSignal is designed to scale with your business and deliver messages more quickly and reliably than the competition. By providing an open API, extensive documentation, free accounts, and intuitive automation, personalization, and analytics tools, we help businesses of all sizes provide a seamless messaging experience to create meaningful customer connections.