Build product notifications that actually reach people

12 Best Customer Journey Orchestration Tools in 2026

API-first orchestration, enterprise CEPs, and marketing suites compared

Customer Journey Orchestration: A Developer's Guide

How API-first orchestration coordinates triggers, multichannel sends, branching, and retries across the customer journey

Developers Guide to Building A Great User Notification System

Everything you need to know to build a great user notification experience for your application

Email Push Notifications - The Ultimate Guide

Learn how email notifications work, when to use them, and how to set them up using Courier and SendGrid for transactional and event-based messaging.

How To Implement a Facebook-Like Web Notification System

Multi-Channel Communication Platform: A Technical Guide

Notification Infrastructure vs Marketing Platform: When You Need Each

Two different layers of the messaging stack, two different buyers, and why most companies eventually run both.

Transactional vs Marketing Email: A Developer's Guide to Deliverability, Consent, and Infrastructure

What separates transactional from marketing email, and why it shapes everything from sender reputation to which API you should reach for.

Transactional vs. Marketing Notifications: Email, Push Notifications, and SMS

Ultimate Guide to SMS Push Notifications

Learn the differences between SMS and app push notifications, when to use each, and how to send SMS like a pro using Courier and Twilio integration.

Courier vs Knock: 2026 notification platform comparison

Courier vs Novu: 2026 notification platform comparison

Courier vs OneSignal: 2026 notification platform comparison

Courier vs SendGrid: 2026 email and multi-channel comparison

Courier vs Twilio: 2026 customer messaging platform comparison

MessageBird Alternatives: The Best Platforms to Replace Bird in 2026

The Twilio-Approved Alternative to Twilio Notify

Courier replaces Twilio Notify, offering everything a developer needs to deliver transactional product notifications across every channel

Twilio Notifications - Batching, Scheduling, Digests, and more

Unlock Powerful Customer Engagement: Courier and Twilio Segment Integrations

What Is Twilio Used For? 5 Key Developer Use Cases

A Developer’s Guide to Twilio: 5 Powerful Use Cases and How Courier Enhances the Experience

Android v/s iOS Push Notifications - What Developers Need To Know

How-To Implement Notifications in Your Gatsby-Powered Website

Learn how to integrate real-time push notifications in your Gatsby site using Courier’s Toast and Inbox components.

How-To Implement Notifications in Your React-Powered Website

Learn how to build real-time push notifications in a React app using Courier’s in-app inbox and toast components.

Implement Push Notifications For Cordova Apps [Top 3 Ways]

Implementing Android Push Notifications [Top 3 Ways]

Learn how to integrate push notifications in Android apps using Firebase, Expo, and Courier—supporting Kotlin, Flutter, and React Native frameworks.

Implementing Flutter Push Notifications [Top 3 Ways]

Implementing Ionic Framework Push Notifications [Top 3 Ways]

Explore three powerful methods for integrating push notifications into your Ionic app using Firebase Cloud Messaging, OneSignal, and WonderPush—complete with pros, cons, and step-by-step guides.

Implementing iOS Push Notifications [Top 3 Ways]

Learn how to implement push notifications in Swift, Flutter, and React Native using APNs and Firebase, and streamline delivery with multichannel support via Courier.

Implementing React Native Notifications [Top 3 Ways]

Explore multiple tools and methods to implement reliable push notifications in your React Native apps using Firebase, OneSignal, and Courier.

Push Notifications in Vue: Comparing FCM, OneSignal, and WonderPush

A comprehensive guide to integrating push notifications into your Vue app using Firebase, OneSignal, and WonderPush—with pros, cons, and setup tutorials.

3 Ways to Implement Wix Browser Push Notifications

How to Set Up Shopify Notifications [Top Apps + Tutorial]

How-To Set Up Magento Email Notifications

How-To Set Up Multi-Channel WordPress Notifications

Learn how to implement multi-channel notifications in WordPress using Courier—including email, SMS, WhatsApp, and browser push alerts—with step-by-step setup and PHP code examples.

Implementing Hubspot Browser Push Notifications [Top 2 Ways]

Implementing Squarespace Push Notifications [Top 3 Ways]

Set Up WooCommerce Notifications [Top Plugins + Setup Guide]

3 ways to send email with Go

Send email from Go over SMTP, through Amazon SES, or with a notification API, using current packages.

3 ways to send email with Java

Send email from Java with Jakarta Mail, Simple Java Mail, or a notification API, using current Maven coordinates.

3 ways to send email with Rust

Send email from Rust over SMTP with lettre, through Amazon SES, or with a notification API.

3 ways to send email with Swift

Open the user's mail composer with MessageUI, or send programmatically from Swift with an email API or a notification API.

4 ways to send email with C#

Send email from C# with MailKit over SMTP, SendGrid, Amazon SES, or a notification API.

5 ways to send email with PHP

Send email from PHP with mail(), PHPMailer, Symfony Mailer, an email API, or a notification API.

3 ways to send SMS with C#

Send SMS from C# with Twilio, MessageBird, or a notification API, using current NuGet packages.

3 ways to send SMS with Go

Send SMS from Go with Twilio, Plivo, or a notification API, with code that actually compiles.

3 ways to send SMS with Java

Send SMS from Java with Twilio, MessageBird, or a notification API, with code that compiles against current SDKs.

3 ways to send SMS with PHP

Email-to-SMS gateways, SMS APIs, and notification APIs, with the tradeoffs that actually decide it.

3 ways to send SMS with Ruby

Send SMS from Ruby or Rails with Twilio, Plivo, or a notification API, with runnable code for each.

3 ways to send SMS with Rust

Send SMS from Rust with the Twilio crate, Infobip, or a notification API over plain HTTP.

4 ways to send SMS with Node.js

4 ways to send SMS with Python

Send SMS from Python with Twilio, Vonage, Plivo, or a notification API, with working code for each and a straight comparison at the end.

Sending SMS Verification Using Node.js [How-To Guide]

3 ways to send push notifications with Node.js

Send mobile push with FCM, web push with VAPID, or both through one notification API.

3 ways to send push notifications with Python

Send mobile push with FCM, web push with VAPID, or both through one notification API.

Top 10 Tools to Check Your Email IP & Domain Reputation | Free & Paid

10 Tips To Improve Your Email Sender Domain Reputation Score

DMARC vs SPF vs DKIM - The Ultimate Comparison

GDPR and SMS Marketing - What You Need to Know

IMAP vs POP3 vs SMTP - The Ultimate Comparison

Multiple SPF Records - Everything You Need to Know

Top 10 Email Testing Tools Compared

What is DMARC - The Ultimate Beginner's Guide

What is SMTP - The Ultimate Beginner's Guide

5 Must-Have Test Cases for Chrome Browser Notifications

5 Must-Have Test Cases for Mobile App Push Notification

Ensure reliable push notification delivery with these 5 must-have Android test cases—covering states, deep links, localization, haptics, and logged-out users.

6 'Must-Have' Test Cases for Email Notification

A practical guide to testing critical email notifications that impact user experience, retention, and business success.

Every WhatsApp Business message type and the rules for each

Every message a business can send on WhatsApp, what each one can look like, and the rules that decide when you can send it.

What Is Notification Infrastructure?

The software layer that turns product events into messages across every channel.

WhatsApp Business Platform pricing, explained

How Meta charges for WhatsApp messages, what stays free, and what changes on October 1, 2026.