Dana Silver
October 20, 2025

Last week, we announced the new Courier Toasts SDK — rebuilt for a smoother, more customizable UX and a faster, drop-in integration experience. Today, we’ll show you just how easy it is to add real-time toast notifications to your app using Courier.
The new Toasts SDK is available today. Whether you’re starting from scratch or upgrading, it’s designed to help you deliver fast, intuitive, and consistent user feedback across your app.
Choose the SDK that fits your stack:

Transactional, Product, and Marketing Notifications: What Are the Differences?
Understanding the difference between transactional, product, and marketing notifications is essential for developers building notification infrastructure. Transactional notifications confirm user actions and require no opt-in. Product notifications drive feature adoption through education. Marketing notifications promote sales and require explicit consent. This guide explains the legal requirements, best practices, and when to use each notification type to build compliant systems users trust.Retry
By Kyle Seyler
October 23, 2025

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.
By Kyle Seyler
October 03, 2025

How Slack Builds Smart Notification Systems Users Want
Slack's notification system serves over 42 million daily active users by balancing smart defaults with user control. Former Slack product lead Liza Gurtin and ex-Airbnb engineer Tommy Dang (Co-Founder at Mage) reveal how Slack built notification intelligence that reduces support tickets while increasing engagement. Learn how platforms like Courier enable businesses to implement Slack-level notification sophistication without custom infrastructure.
By Kyle Seyler
September 29, 2025
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