The Courier Team
January 16, 2025

Twilio powers communication for over 10 million developers and 300,000 businesses worldwide. As a leader in customer engagement, they’ve set the standard for seamless, scalable developer tools. But as their business grew, managing notifications became a challenge. Fragmented tools and workflows created inconsistencies and inefficiencies across teams. To solve this, Twilio turned to Courier—a platform designed to unify notifications and improve the developer experience at scale.
Twilio’s in-console notifications are critical for keeping developers informed. Whether it’s product updates, feature launches, or system alerts, notifications help developers stay engaged and take action. But as Twilio scaled, teams started relying on different tools to manage notifications. The result? Fragmented user experiences, messaging inconsistencies, and time lost managing workflows.
For a platform of Twilio’s scale, these challenges added friction to what should have been a seamless experience. They needed a unified solution to deliver consistent, real-time updates while simplifying workflows for their teams.
Twilio needed a notification platform that could scale with them and adapt to their complex workflows. Courier stood out for its ability to centralize notifications and streamline delivery across channels. Key factors in their decision included:
With Courier, Twilio could unify their notifications while enhancing the experience for developers.
Integrating Courier gave Twilio the tools to fix fragmented workflows and deliver better notifications across their ecosystem. With Courier’s web inbox, Twilio created a central hub for real-time, in-console updates that developers could rely on. Notifications were now consistent, actionable, and delivered exactly when needed.
Courier’s notification center also allowed Twilio to give developers control over their preferences, including digest schedules and message frequency. Customizable templates ensured that every notification matched Twilio’s branding, while real-time delivery powered by webhooks and WebSockets kept developers in sync.
By streamlining their workflows and centralizing notifications, Twilio saved engineering time and created a better experience for their developer community.
The integration with Courier brought immediate and measurable improvements:
These changes didn’t just address the challenges Twilio was facing—they elevated the experience for developers and reinforced Twilio’s reputation for delivering world-class tools.
The partnership with Courier helped Twilio transform how they manage notifications. Developers now have a consistent and intuitive in-console experience, making it easier to stay informed and take action. By centralizing notifications and improving real-time delivery, Twilio increased engagement and reduced friction for its users.
Internally, the benefits were equally clear. Engineering teams saved time by eliminating fragmented workflows, while Courier’s customizable templates ensured consistent branding without additional effort.
Twilio’s Product Lead, Kandyce Knight, summed it up: “We at Twilio know how important it is to meet your customers at their preferred channels. Courier gives us the power to fully personalize our customer touchpoints in one easy-to-use, centralized tool.”
For Twilio, the integration wasn’t just a solution—it was a shift that enabled them to scale their platform while staying true to their developer-first ethos.
Twilio’s success with Courier highlights the importance of a unified notification platform. By solving fragmented workflows and delivering real-time, personalized updates, they improved engagement for millions of developers while saving valuable engineering time.
For organizations managing complex notification systems, Courier offers a proven way to simplify workflows, deliver better user experiences, and scale seamlessly.
Explore how Courier Web and Mobile Inbox can help you better engage your customers. Learn more here.

Vibe Coding Notifications: How to Use Courier with Cursor or Claude Code
Courier's MCP server lets AI coding tools like Cursor and Claude Code interact directly with your notification infrastructure. Unlike Knock and Novu's MCP servers that focus on API operations, Courier's includes embedded installation guides for Node, Python, Flutter, React, and other platforms. When you prompt "add Courier to my app," your AI assistant pulls accurate setup instructions rather than relying on outdated training data. OneSignal's MCP is community-maintained, not official. Courier supports 50+ providers, native Slack/Teams integration, drop-in inbox and preference components, and a free tier of 10,000 notifications/month. Configure in Cursor with "url": "https://mcp.courier.com" and "headers": { "api_key": "YOUR_KEY" }.
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The Complete Guide to B2B Customer Engagement
Courier provides the notification infrastructure layer for B2B customer engagement, routing messages across email, SMS, push, in-app, Slack, and Teams based on user preferences and product events. Unlike building notification systems in-house—which takes months of engineering time for features like multi-channel routing, preference management, and delivery tracking—Courier handles this infrastructure so product teams can focus on engagement strategy. B2B customer engagement requires multiple layers: notification infrastructure (Courier), customer data platforms (Segment), product analytics (Mixpanel/Amplitude), and channel-specific tools. Companies with strong engagement programs see 15-25% churn reduction. The key is connecting product events to customer communication at the right moment through the right channel, handling complexity like multiple users per account with different notification needs across work channels.
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No platform offers per-template delivery windows in 2026—it's either per-workflow (Customer.io, Knock), per-campaign (Braze), or global settings. This comparison shows exactly how six platforms handle quiet hours and send time controls based on their documentation and API specs. Braze leads on AI timing (23% open rate lift from Intelligent Timing across their customer base). Novu is the only platform letting subscribers set their own delivery windows. Customer.io and Knock require manual workflow configuration. OneSignal's strength is push-specific optimization across 300K+ apps. Courier combines per-node flexibility with API control. Includes feature matrix, timezone handling, and frequency capping differences.
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