Product Management

AI Tools for Product Managers: The Modern PM Stack

The modern PM stack runs on AI at every step: Cursor and Claude Code for build, Pencil and Claude Design for prototyping, Courier for notifications and agent communication, Segment for routing product events and engagement data, PostHog for analytics and LLM evals, and a knowledge system like Notion for shared memory across humans and agents.

The AI Node in Journeys: Smarter Branching, Personalized Messages, and Live Enrichment

Courier Journeys now includes an AI node that you can drop into any customer journey. Use it to branch on logic too nuanced for if/then, generate message copy shaped by each user's context, enrich profiles with live data mid-flow, and batch activity into recurring digests. Existing deterministic journeys keep working. The AI node is additive, not a replacement, and it lets you unlock the kind of personalization that used to require a dedicated ML team. Here's what it does and how to use it.

Your Notification Center, Your Competitive Edge

The in-app inbox is the most valuable notification surface you own. Every other channel has a gatekeeper: push, email, and SMS all run through someone else's filters. The inbox is the one surface where you set the rules. Courier Inbox ships as a drop-in component backed by a hosted API that stores messages, syncs read state across devices in real time, and integrates with your other channels. SDKs for React, Web Components, React Native, Flutter, iOS, and Android. Install it with an AI coding agent or a few lines of code. Theme it, customize the renderers, or go fully headless.

5 Mistakes Teams Make Building Customer Journeys

Most journey problems don't announce themselves. They show up as rising unsubscribe rates, softer engagement, and a sense that messaging used to work better. This post breaks down five mistakes teams repeat when building customer journeys: shipping too many without coordination, building journeys with no exit criteria, treating channels as interchangeable, letting the org chart dictate the flow, and using time delays where event triggers belong. Each section names a specific fix you can apply before you ship the next sequence.

5 Best Platforms for Product Messages in 2026

Product messages are a requirement for every SaaS product, but most teams outgrow their initial setup fast. You start with one email provider, add push, then SMS, and suddenly you're maintaining multiple integrations with no shared routing, no preference management, and every copy change requires a deploy. This guide compares five platforms that solve different versions of this problem: Courier for cross-channel messaging with AI tooling, Resend for developer-friendly transactional email, Customer.io for marketing-adjacent journeys, Supabase for built-in auth emails, and Novu for open-source self-hosted infrastructure.

How to Use Claude Code on Mobile to Design, Test, and Ship Multichannel Notifications

A walkthrough of using Claude Code's mobile app with Courier's MCP server and CLI to design, test, and ship a multichannel product announcement from a phone. Covers the full workflow: drafting the content outline, creating notification templates using Courier's elemental format, building channel-specific variants for email, Slack, push, and SMS, customizing brand styling through the API, iterating on design with test sends, getting team approval, and publishing with custom routing rules. The whole thing took a couple hours, mostly cold start and design iterations.

How to Build B2B Customer Journeys

Courier Journeys is an AI-native journey builder for multi-step customer messaging. Build on a visual canvas with branching, delays, live data fetching, AI nodes, and omnichannel sends. Define your payload schema so variables autocomplete throughout the flow. Branch on product events and profile data. Use AI to enrich profiles, drive branching logic, or generate personalized message copy. Throttle messages so customers aren't overwhelmed. Compare draft changes against the live version before publishing. Invoke and test from the CLI or MCP server. Scaffold growth patterns with Courier Skills.

Audit Notifications with Cursor or Claude Code

Most teams can't answer a basic question about their own product: what notifications are you sending, and are they working? This post walks through a full notification audit using Courier's CLI and MCP server from inside your coding environment. You'll inventory every template, pull delivery logs to surface failures, trace messages end to end, inspect rendered content for stale copy, map the data feeding each notification, break down delivery health by tenant, check preference coverage, and build a hit list of notifications to kill, revise, or batch. All from the command line. Takes about an afternoon.

Courier vs Customer.io: 2026 messaging platform comparison

Courier and Customer.io both send across multiple channels, but they're built for different jobs. Courier is a customer messaging platform for product teams: it turns the events and user data your app already produces into notifications across journeys, broadcasts, Inbox, preferences, and AI internationalization. Customer.io is built for marketers running profile-driven campaigns, segmentation, and A/B testing. This comparison covers pricing, workflows, in-app messaging, localization, and which one fits your use case.

How Product Teams Build, Test and Ship Multichannel Notifications in Design Studio

Product teams need to build, test, and ship notifications across multiple channels without filing an engineering ticket every time. Courier's Design Studio is the workspace for that: a template builder, visual channel routing, omnichannel testing, and publishing in one place. This post walks through the traditional template designer paradigm, how it splits effort across too many tools, and outlines a path for product and growth teams to ship transactional, product, and marketing notifications from a single workspace.

Customer Engagement Platforms Are Splintered. Message Orchestration Is the Fix

Customer engagement platforms are splintered. Some are built for campaigns, others for support automation, and others treat messaging as a transactional delivery problem. The result is collisions, blind spots, and message fatigue. The highest-leverage fix is solving the lifecycle-to-product and transactional vector with a message orchestration layer: one system that routes, suppresses, prioritizes, and observes messages across channels. Think air traffic control for user communications.

What are transactional notifications? Transactional email examples, transactional push, and more.

Transactional notifications are automated messages triggered by user actions or system events, like password resets, order confirmations, and payment alerts. Unlike marketing messages, they require no opt-in and have legal protections under CAN-SPAM. This guide covers what transactional notifications are, how they work across email, SMS, and push channels, real-world examples for each, and how to stay compliant. Whether you're building your first notification system or auditing an existing one, this breakdown will help you understand what belongs in each category and how to route messages correctly.

What's the Difference Between Omnichannel & Multichannel

Most teams say "omnichannel" when they mean "multichannel," and in most cases the distinction doesn't matter much. But if you truly want to provide an exceptional customer engagement experience you should know the difference. Both involve sending messages across email, push, SMS, Slack, and in-app. They terms diverge when those channels know about each other. Multichannel means you can reach users on multiple channels. Omnichannel means those channels share state, so a user who reads a push notification won't get the same message via email an hour later. This guide breaks down the real distinctions, when the difference actually matters, and which messaging platforms deliver true omnichannel coordination.

Personalization Beyond "Hello {{firstName || "there"}}!"

Using someone's name matters, just not for the reason most teams think. It builds familiarity over time but doesn't change what people do. The teams getting real results have moved past names to sending based on what users do and when it matters to them. This guide breaks down five tiers of personalization, shows where the gains actually come from, and helps you figure out where to focus. No machine learning needed for the tiers that matter most.

The First 48 Hours: Onboarding Notifications That Keep Users Around

The first 48 hours after signup are when users decide if your product is worth their attention. Every notification you send is an audition. Most teams blow it by sending too much too fast: welcome email, feature announcement, tip, CEO note. Day one and you've already trained users to ignore you. This guide breaks down what to send (and what not to send) in the critical first 48 hours, with timing frameworks, example sequences, and the one metric that matters more than open rate. Includes templates for signup confirmation, activation prompts, and day-two follow-ups.

What Is Alert Fatigue?

Alert fatigue occurs when users become desensitized to notifications due to high volume, leading to ignored alerts, missed critical information, and decreased engagement. This problem affects product notifications, DevOps monitoring, healthcare systems, and security operations. This guide covers the psychology behind alert fatigue (habituation and the "cry wolf" effect), how to measure it (open rates, dismiss rates, time-to-action), and five practical strategies to reduce it: batching, prioritization, user preferences, smart channel routing, and timing optimization.

SMS Opt-Out Rules in 2026

TCPA consent rules changed in April 2025. Consumers can now revoke consent using any reasonable method, including keywords like "stop," "quit," "end," "revoke," "opt out," "cancel," or "unsubscribe." Businesses must honor opt-out requests within 10 business days, down from 30. The controversial "revoke all" provision, which would require opt-outs to apply across all automated messaging channels, has been delayed until January 2027 and may be eliminated entirely. SMS providers like Twilio handle delivery infrastructure and STOP keyword responses at the number level. They don't sync opt-outs to your email provider, push notification service, or in-app messaging. That cross-channel gap is your responsibility. Courier provides unified preference management that enforces user choices across SMS, email, push, and chat automatically.

Top Push Notification Platforms For Product Teams To Boost Engagement In 2026

Push notifications drive 182% higher session rates when done right. This guide evaluates 12 platforms—including Courier, OneSignal, Firebase, Braze, and CleverTap—on delivery reliability, cross-channel orchestration, and developer effort. Learn which unified notification platform eliminates vendor sprawl while giving product teams the flexibility to ship notifications in days instead of months. We compare free tiers, pricing models, and key gaps each platform has compared to unified notification infrastructure.

Customer Engagement Platform vs CRM: Key Differences Explained

A CRM stores customer data: contacts, purchases, support tickets, and pipeline. It answers "who are our customers?" A customer engagement platform (CEP) orchestrates communication across email, push, SMS, in-app, and chat. It answers "what should we tell them next?" CRMs focus on historical records. CEPs process real-time behavior and trigger messages based on actions. Most teams need both, plus a third layer: notification infrastructure for reliable multi-channel delivery. Courier bridges CEP and infrastructure by combining routing, failover, and delivery tracking with engagement features like preference management, visual templates, and in-app notification centers.

Customer Communication Platforms: What to Look for in 2026

Customer communication has evolved beyond batch-and-blast campaigns. Modern platforms must handle real-time event triggers, smart channel routing, visual journey orchestration, and compliance across multiple channels. This guide breaks down what to look for when evaluating customer communication platforms in 2026. We cover B2B customer journeys, business messaging (Slack, Teams, WhatsApp), drop-in preference centers, CDP integration, and analytics that actually help you improve. Includes comparisons of Courier, Customer.io, Braze, and infrastructure-first alternatives.

Top Platforms for Preference Management in 2025

73% of users unsubscribe from poorly targeted notifications. The problem: preference logic is scattered across marketing platforms, product notification systems, and multiple providers that don't talk to each other. Most preference tools handle marketing OR product notifications, not both. This guide compares 9 platforms for 2025, evaluating integration depth, compliance support (GDPR, CAN-SPAM, TCPA), and multi-channel capabilities across email, SMS, push, chat, and in-app. Includes SDK references, implementation examples, and MCP setup for AI-assisted configuration. Best for teams planning Q1 notification infrastructure improvements.

Twilio Integrations with Courier: SMS, SendGrid, Segment

Twilio owns critical notification infrastructure: SMS for billions of messages, SendGrid for email at scale, and Segment for customer data aggregation. Using them together means maintaining three APIs, three credential sets, and zero coordination between channels. Courier solves this by providing a single integration point for all three Twilio products. Connect your accounts, use one API to send across SMS and email, trigger notifications from Segment events, and orchestrate multi-channel delivery with routing rules and failover built in.

Nodemailer Alternative: Outgrowing DIY Email Infrastructure

Nodemailer works great for transactional email in early-stage products. But B2B customer journeys demand more: Slack notifications for engineering teams, Microsoft Teams messages for enterprise customers, in-app notification centers, SMS escalations, and push alerts. Building this yourself means maintaining integrations with SendGrid, Twilio, Firebase, Slack's API, and Microsoft Graph. Courier provides omnichannel notification infrastructure through one API, handling routing, preferences, delivery, and analytics across every channel.

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.

Top 10 Rules for SMS Messaging

SMS transactional messages have exceptional open rates but just 160 characters to communicate critical information. Whether it's delivery confirmations, security alerts, or payment notifications, these messages must be clear, trustworthy, and actionable. This guide covers 10 essential rules for effective SMS messaging: leading with purpose, ensuring brand clarity, respecting character limits, making actions crystal clear, building trust through proper link hygiene, sharing just enough context, guiding users through security scenarios, mastering timing, providing escape routes, and building unbreakable templates.

What Most People Get Wrong About Push Notification Metrics

Push notification analytics have evolved beyond traditional engagement metrics, yet many teams still rely on outdated measurement approaches that obscure real business value. The challenge lies in applying email marketing metrics to push notifications without considering fundamental differences in user behavior and platform constraints. A notification that never gets "opened" might still drive a purchase decision or prevent user churn.

Video Guide: Courier MCP + AI Coding (Cursor)

Building notifications into your app just got dramatically easier. Courier's new MCP server brings AI-powered notification assistance directly to your IDE, so you can integrate, test, and manage notifications without ever leaving your workspace. Model Context Protocol servers give AI agents deterministic functionality instead of guessing. Connect your AI assistant directly to Courier's platform, get smart installation guidance, send messages with natural language, and manage users safely—all through Cursor, Claude Code, VS Code, and more.

When AI Needs to Talk

AI agents are transforming work by operating autonomously around the clock, but they're creating unexpected communication challenges. When MIT's AI discovered the antibiotic halicin, it sat unreviewed for months. As agents generate insights faster than humans can process them, teams face notification fatigue and approval bottlenecks. The solution isn't smarter agents—it's better infrastructure for agent-human communication that can route intelligently and maintain context.

AI Is Changing How Users Discover Products

Search is changing. Google still dominates, but new behavior is emerging fast. At Courier, we’ve seen ChatGPT become a real source of referral traffic—outpacing DuckDuckGo and closing in on Bing. Here’s what the numbers are telling us.

The Product Manager's Guide To Building Notification Systems: Optimized Automation Logic

Tailored notifications are essential for a positive user experience. Learn how automation tools make it easy to customize user notifications.

The Product Manager's Guide To Building Notification Systems: Omni-channel Analytics

This is part 4 of a 5 part series. In this article, we talk about omni-channel analytics, why analytics are hard for notifications, and what we believe is needed to empower PMs. We’ll also share some specific tips on making the best of analytics data to design a more informed notification experience for your users.

The Product Manager's Guide To Building Notification Systems: Preferences Management

This is part 3 in a 5 part series. In this article, we’ll cover notification preferences — what they are and which preference options you should consider including in your app — and share some tips on which more advanced options you could build to delight your customers.

The Product Manager's Guide To Building Notification Systems: Decoupling Templates From Code

This is part 2 of a 5 part series. In this article, we explain how decoupling notifications from your application’s codebase can help make notification projects less complex and less risky for product teams.

The Product Manager’s Guide to Designing a Great Notification Experience

Notifications aren’t just messages—they’re a core part of your product experience. Learn how to design smarter, better-timed notifications that build trust, drive engagement, and keep users connected across every channel.

I Owned a Major Product Feature as a PM Intern

We wanted to learn more about Denis’ Courier internship experience, so we asked if he’d be willing to work on a writeup for us. Then what he came up with was so good, we thought it would be a great idea to share with all of you!

Why Are We Okay with Notification Interruptions from Slack?

The daily bombardment of alerts dinging, beeping, and ringing from all those applications we use is enough to drive someone completely crazy. Yet, for some inexplicable reason, we allow ourselves to be interrupted by Slack in a way we wouldn’t from any other platform.

Building Product Notifications That Users Love

Product notifications should never spoil a user’s experience—they should contribute to it. Otherwise, users are prone to turn off the notifications. According to Statista, 39% of smartphone users who receive too many notifications turn them off in response.

Follow These Considerations For An Effective Push Notification System Design

Push notifications are generally an effective mechanism for user engagement, but it's no longer enough to simple just *have* push notifications. Given increased user scrutiny and competitiveness for attention, notification system design is more important than over. We offer some guidelines on how to design effective push notifications.

Notification Strategy for Web and Mobile Apps: Design, Channels, Best Practices

Designing effective notifications isn’t just about delivery—it’s about timing, personalization, and user experience. In this guide, we’ll walk through how to build a scalable, multi-channel notification system that keeps your users informed, engaged, and in control.

Slack's Notification Strategy: Flowchart for Designing Effective Multi-Channel Messaging

Slack sends billions of notifications each month—but how do they decide what to send, when, and where? In this post, we break down Slack’s notification strategy using a simple flowchart. Whether you’re building a messaging product or refining your notification UX, you’ll learn how to balance urgency, context, and user experience just like Slack does.

Inside Twilio’s Journey From a Single Voice API to a Multi-Channel Communications Giant, with former VP of Product Patrick Malatack

Today Twilio powers billions of interactions across voice, text, chat, and more. We sat down with Patrick Malatack, former VP of Product, to discuss Twilio's journey from a single voice API to the leading multi-channel communications platform.