The Courier Blog
Video Tutorial: Getting Started with the New Courier Inbox for React
See how easy it is to add real-time in-app notifications to your React app with the new Courier Inbox for Web. Watch the demo and start building in minutes.
The New Courier Inbox for Web — Faster, More Flexible In-App Notifications
Courier Inbox for Web has been rebuilt for speed, flexibility, and easy integration. Add real-time in-app notifications to your app in minutes with full UI control.
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.
Best Push Notification Services: A Complete Comparison
Push notifications are critical for modern user engagement. In this guide, we compare the best push notification platforms, from legacy tools like Airship and Firebase to modern APIs like Courier, covering features, pricing, and developer experience.
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.
Why You Need Multi-Tenant Infrastructure for Notifications
Need to send notifications for many customers without mixing data or losing brand identity? This practical guide walks you through mapping a tenant hierarchy, carrying context in every call, setting up layered preferences, and adding dynamic branding. It pairs code samples with checklists so you can choose to build from scratch or plug in Courier when you are ready to scale
How to use subdomains to improve email deliverability
Mailbox providers score sender reputation per sending domain, so one bad campaign can take your password resets with it. Here's how to split your email streams across subdomains, and what that does and doesn't protect you from.
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.
Slack & Microsoft Teams: Notifications Have Entered the Chat
Right message, right time, right place. Your users juggle email, Slack, Teams, and mobile but context matters. Product teams are using intelligent routing so urgent alerts land in active channels. Courier makes this easy with time and context-aware routing and behavioral triggers.