Customer.io

Customer.io lets marketing and product teams send messages based on what each person actually does in a product or on a website. Events and attributes are sent to the platform, where teams build segments and design automated journeys in a visual workflow builder, with branches, delays and A/B tests. Messages go out by email, push notification, SMS, in-app message or webhook, and transactional messages can be sent through the same system. A data pipelines product collects first-party customer data and routes it to other tools. It is mostly used by SaaS, mobile app and subscription businesses for onboarding, activation, retention and lifecycle campaigns.