The Courier Blog

A More Secure Way to Authenticate AWS SES in Courier – IAM Role Support

Courier now supports IAM Role authentication for AWS SES, offering a more secure, keyless way to send emails. This method eliminates long-term access keys, reduces security risks, and simplifies credential management with automatic rotation.

Firebase Dynamic Links Are Shutting Down – What’s Next for Notifications & Deep Linking?

Firebase Dynamic Links will be discontinued by August 25, 2025, impacting push notifications, SMS, and email deep linking. Discover the best alternatives, from App Links and Universal Links to third-party services and custom solutions.

Rethinking Push and In-App Notifications: What B2B Can Learn from B2C

Most B2B products rely on push notifications alone, treating them as transactional alerts. But B2C companies like Airbnb and Starbucks have already figured out a better way—combining push for real-time engagement with an in-app inbox for persistence and organization. This playbook isn’t just for consumer apps; B2B can benefit, too. Here’s how to bring the best of B2C notifications into your product.

APNS Security Update 2025: Courier Customers Are All Set!

Apple’s APNS Security Update takes effect on March 29, 2025, requiring updated server certificates. After thorough testing, we’re excited to confirm that Courier customers are unaffected. Notifications sent via APNS with P8 keys or P12 certificates work seamlessly—no changes required. Read on to ensure your app is prepared.

The Evolution of Mobile Development: From native apps to Flutter, React Native, and AI

Mobile development has come a long way—from the challenges of native apps to the rise of cross-platform tools like React Native and Flutter. Now, AI is driving a new wave of innovation, making app creation faster, smarter, and more accessible than ever. Explore the journey and see what’s next for developers.

📣 How Twilio Used Courier to Unify Notifications for 10 Million Developers

Twilio, a leader in customer engagement, faced challenges scaling notifications for 10 million developers. Discover how Courier helped them unify workflows, deliver real-time updates, and enhance the developer experience at scale.

Courier Inbox Mobile SDK Updates - January 2025

This month, Courier rolls out updates to its mobile SDKs, enhancing usability, reliability, and developer experience across iOS, Android, React Native, and Flutter.

Smart Notification Scheduling with Delivery Windows

Timing is everything. Courier’s new Delivery Window feature ensures your notifications arrive at the perfect moment—no more off-hours pings or complex scheduling code. Define the rules, and Courier handles the rest, adapting seamlessly to time zones and user preferences.

Get Your iOS App Ready for the 2025 Apple Push Notification Service Server Certificate Update

Apple is updating its Push Notification Service (APNs) certificates in 2025. Learn how to prepare your app for these changes, ensure uninterrupted notifications, and get expert tips for a smooth transition.