What is Courier?
Automatically upgrades your outbound user notifications to use the best channel for each user. Email, mobile push, in-app, SMS, or chat — all from a single API.
Courier is a tool in the Web Push Notifications category of a tech stack.
Who uses Courier?
Slack, Firebase, Twilio SendGrid, Twilio, and Mailgun are some of the popular tools that integrate with Courier. Here's a list of all 8 tools that integrate with Courier.
Courier Alternatives & Comparisons
What are some alternatives to Courier?
See all alternatives
It is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. It is an excellent choice for both small and large installations. It's fast, simple to set up, requires no special administration and it uses very little memory.
OneSignal is a high volume push notification service for websites and mobile applications. OneSignal supports all major native and mobile platforms by providing dedicated SDKs for each platform, a RESTful server API, and a dashboard.
Apple Push Notification Service
It is the centerpiece of the remote notifications feature. It is a robust, secure, and highly efficient service for app developers to propagate information to iOS (and, indirectly, watchOS), tvOS, and macOS devices.
Free unlimited cross platform push notifications! iOS, Android, Windows Phone, Phonegap, Unity, Marmalade, Adobe Air - we support them all! Easy integration, open-source SDK.