Kyle Seyler
July 29, 2025

Modern technology has made it easy to reach anyone, on any device, at any time. That doesn’t mean we should.
Email was the communication innovation of an entire generation, but has become a difficult place to punch through the noise. Push notifications and SMS grab attention from a mobile device, but they can pull people out of the flow of work, if sent at the wrong time.
Enter Slack and Microsoft Teams. These platforms aren't just chat tools, they're information hubs where teams collaborate and make decisions. Instead of burying alerts in email threads, deliver them directly into the flow of work. Both platforms offer users control over what gets immediate attention and what can wait.
But here’s the tradeoff. If your notifications are noisy or poorly timed, they’ll get silenced. If they’re thoughtful and relevant, they’ll become a welcome part of a user's workflow.
We can help you build a notification strategy that fits the rhythm of teams actually work.
Push notifications and SMS are useful for on-the-go moments like a critical system alert when you're commuting or a quick nudge about a meeting while you're grabbing coffee. But let's be honest, most of our collaborative work happens in chat tools. Slack has been proven to boost productivity by 47% and Microsoft Teams is used by 93 of the Fortune 100 companies.
Interesting note: 66% of surveyed companies reported using both Slack and Microsoft Teams.
Just as AOL’s “You’ve Got Mail” ushered in a new era of productivity with email, so too will Slack and Teams notifications change the way people work. Why? Because:
Adding chat notifications to your channel mix isn't just about flipping a switch; like everything else in this world, it’s about timing.
Everyone knows what happens when you flood people with irrelevant pings: they mute the channel or unsubscribe. If your Slack or Teams alerts feel like spam, they’re not helping, they’re hurting. Here are three common pitfalls:
This leads to notification fatigue where even the important stuff gets ignored. It’s like yelling into a void. So how do you actually get noticed?
Here's the good news. You can make Slack and Teams notifications feel helpful instead of intrusive. The solution: behavior-based triggers and user-based routing that ensures every alert is timely, relevant, and user-approved.
Focus on these elements:
Slack and Teams aren't just communication tools; they're how we stay informed at work. By adding chat channels to your notification mix, you meet users where they do their work.
Success requires prioritizing relevance and user control to avoid the spam trap. With the right multichannel routing, preference management, and workflow tools, you can build notifications that feel like natural extensions of work rather than interruptions.
Ready to level up your notification game? Send up to 10,000 notifications a month for free. Your customers (and their inboxes) will thank you.

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" }.
By Kyle Seyler
January 22, 2026

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.
By Kyle Seyler
January 20, 2026

How Top Notification Platforms Handle Quiet Hours & Delivery Windows in 2026
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.
By Kyle Seyler
January 16, 2026
© 2026 Courier. All rights reserved.