Courier

Built for developers, Courier is the fastest way to add multi-channel product notifications to your web, desktop, or mobile app. Make developers' lives easier with a suite of features like automations, preferences management, audit logs, and white-labeling. Product and engineering teams need template management, custom routing, detailed logs, automated workflows, and other internal tools to run critical operations. Rather than build from scratch, a developer can use Courier to build a powerful notifications infrastructure faster. Its notifications designer includes drag-and-drop building blocks so you can assemble a notification in minutes. From there, you can write custom code, connect to data sources, or add additional channels such as email, chat, in-app, SMS, and push to create dynamic notifications your users will love. Trusted by innovative startups like Lattice, LaunchDarkly, Contentful, Apartment List, and Vendr. Backed by Y Combinator, Bessemer Venture Partners, Matrix Partners, Twilio, and Slack Fund.