The Courier Blog

Three Ways to Send Emails Using Python With Code Tutorials

Learn how to send an email in your Python application with SMTP, with a transactional email API, and with a multi-channel notification service.

What's New in February: Recipients list, New integrations, Java SDK, and plain text for emails

Each month we share the latest Courier news and highlight what we shipped, wrote, and shared with our community. With February come and gone, we're back with our second monthly wrap-up of 2021.

How to Send Emails in Node.js: SMTP, Email APIs, and Notification Services (With Code Tutorials)

Learn how to send transactional emails in Node.js using SMTP, email APIs like SendGrid or Mailgun, and multichannel tools like Courier. Step-by-step code examples included.

Content, Notifications, and IoT

On February 2nd and 3rd, Shy Ruparel joined Aydrian for another Courier and Contentful crossover stream. This time, they decided to play around with an IoT E-ink display and use it to show the latest posts from Contentful and send notifications using Courier.

Top 6 Transactional Email Services for Developers in 2025

Looking to send transactional emails for your application? We compare the top transactional email API services for developers to help you pick the right one.

Twitch Notifications (Part Three): How to Create and Notify a List of Subscribers Using Courier

In this tutorial, Aydrian will show you how to extend the Node.js and Express app from part two to send notifications to more than one destination using Courier’s Lists API. He'll also demo sending to a Discord channel.

Slack's Notification Flowchart: How Slack Decides What to Send

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.

Twitch Notifications (Part Two): How to Send Notifications When Your Twitch Stream Goes Live

In this tutorial, Aydrian will show you how to listen for events from Twitch and then create and trigger a notification in Courier. He’ll demo sending an SMS notification with Twilio.

Announcing Environments: Safely Test Your Notifications Before Going Live

We’re excited to announce the release of Environments in Courier. You can now create, preview, and troubleshoot your notifications in a test environment before going live.