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Dev tools · June 24, 2021

Courier

API, designer, and metrics for messaging & notifications

Courier launched on June 24, 2021 with 257 votes, #83 of 3,650 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 5 years on.

Visit courier.com ↗Courier alternativestop 2% of June 2021

In plain words

Courier is a messaging and notifications platform that provides developers with an API, design studio, and analytics tools to send messages across multiple channels. It includes SDKs for Node.js, Python, Ruby, PHP, Go, and Java, along with features for automations, white-labeling, inbox management, and user preferences. The service is free to use and requires no credit card to get started, making it suitable for developers building customer communication systems of any size.

written from the facts on this page · September 2026

From the sources

Courier's API and Studio enable developers to deliver the right message to the right user at the right time. Free to use | No CC required SDKs for Node.js, Python, Ruby, PHP, Go, and Java. Automations | White-Labeling | Inbox/In-App | Preferences

The messaging platform for humans and AI agents. Send multichannel notifications across email, push, SMS, Slack, and more, with journeys and preferences built in.

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