Integrations

Courier + Stream: The Future of Customer Engagement is Here

Modern apps need more than features—they need conversations and intelligent communication. Courier's omnichannel notification platform combined with Stream's real-time messaging infrastructure transforms how developers build engaging experiences. Send notifications across email, SMS, push, and in-app channels while powering real-time chat, video calls, and activity feeds. With Courier's new MCP server, implement Stream directly from your IDE using AI agents. From indie developers to enterprises, build production-ready communication features in days.

How to Build a Notification Center for Web & Mobile

A notification center is a familiar pattern (a bell, an unread count, a feed) sitting on a deeper system of real-time delivery, cross-device state, and storage. This guide covers how one works, how to build it with React and React Native, and how to decide whether to build or buy.

What is the Twilio Messaging API?

Twilio's Messaging API enables developers to send and receive SMS, MMS, WhatsApp, and RCS messages at scale across 180+ countries. While Twilio excels at reliable message delivery through carrier networks, modern applications need more than single-channel messaging. Courier acts as a provider-agnostic orchestration layer that activates messaging across Twilio and other channels from a single platform. You get intelligent routing, user preference management, and fallback logic without vendor lock-in.

Push Notification Fallbacks: Ensuring Message Delivery with Email, Slack, SMS

Push notifications fail more often than you think - users disable them, uninstall apps, or devices go offline. Smart fallback strategies using email, SMS, and workplace chat (Slack & Microsoft Teams) ensure your critical messages always reach users. Courier's multi-channel routing automatically handles delivery failures, switching between push, email, Slack, Teams, and SMS based on your configuration. Unlike basic notification services, Courier provides intelligent timeout management, provider failover, and robust user preference management.

Top 7 Push Notification Providers in 2025

Push notifications drive real-time engagement, but managing multiple providers creates integration complexity. Courier is provider-agnostic orchestration layer for Push, Email, SMS, In-App, and Chat. We evaluated 7 top push services—FCM for universal coverage, APNS for iOS reliability, MagicBell for in-app centers, plus Airship, Pusher Beams, Expo, and AWS SNS. Most apps need multiple providers like FCM + APNS + MagicBell. Instead of custom integrations, use notification orchestration for automatic failover and unified management across email, SMS, and chat channels.

Top 6 Email Service Providers for Transactional Notifications in 2025

Comprehensive guide to the 6 best email service providers for transactional notifications in 2025. Compare SendGrid for high-volume enterprise delivery, Mailgun for developer APIs and routing control, Resend for React-based templates, AWS SES at $0.10/1000 emails for cost efficiency, Postmark with <2 second delivery for critical notifications, and SMTP for universal compatibility. Learn why most teams need multiple ESPs, how to meet new SPF/DKIM/DMARC requirements for Gmail, Yahoo, and Outlook.

Courier + Segment: A Guide to Event-Driven Messaging

Courier's native, bidirectional Twilio Segment connection enables real-time event-driven messaging with engagement feedback loops. Trigger multi-channel notifications (email, SMS, push, in-app) from Segment track events like "Trial Started" or "Feature Used." Courier sends engagement data back to Segment for behavioral analytics. Build automated workflows with drag-and-drop editor, conditional logic, and channel fallbacks. Supports SendGrid, Twilio, and native Inbox components for comprehensive notification orchestration.

How to Send an SMS in Java

Send an SMS in Java using the Courier SDK with your existing Twilio account as the provider. Complete working code, step-by-step setup, and a direct Twilio comparison for when the orchestration layer is overkill.

New Datadog integration for Courier notification logs and metrics

The ability to unify all notification metrics and logs across channels and providers into an easy-to-use dashboard is a core advantage of Courier’s notification infrastructure. However, with product notifications so critical to the entire application experience, it’s important to connect that data back to central cloud observability platforms that look across the entire stack. This gives platform engineering teams a complete understanding of application health and lets them quickly troubleshoot even the most complex issues. Today, we’re incredibly excited to announce our first observability integration with Datadog. [Datadog](https://www.datadoghq.com/) is a tool for collecting metrics and other data from applications and viewing them in a centralized place. Datadog’s dashboards and monitoring tools build a more accurate picture of the health of your application and how it changes over time. Our integration with Datadog is easy to spin up when you use our “dashboard starter kit.” This consists of some pre-configured JSON to set up a simple dashboard in Datadog for your Courier data. Our Datadog integration is currently only available on Courier’s Business plan, much like our other production-focused features such as [template analytics](https://www.courier.com/docs/platform/analytics/analytics-overview), [Okta integration for SSO](https://www.courier.com/docs/platform/workspaces/okta-integration), and [advanced user preferences](https://www.courier.com/docs/platform/preferences/preferences-overview).