# Novu

> Open-source communication infrastructure to notify users and connect AI agents across multiple messaging channels via a single API.

- Website: https://www.novu.co/?ref=devshelf.io
- DevShelf page: https://devshelf.io/resource/novu
- Pricing: Freemium
- Tags: Open Source, Self-hosted
- Categories: [Email & Notification APIs](https://devshelf.io/category/email-notification-apis.md)
- Last checked: 2026-11-03

## About

Novu is an open-source communication infrastructure designed for modern applications and AI agents. It provides a unified platform featuring notification workflows, prebuilt inbox components, rate limits, and digests for standard alerts. Additionally, it enables two-way communication for AI agents across channels like Slack, WhatsApp, and SMS, managing full conversation history and human-in-the-loop approvals.

## Alternatives

- [Knock](https://devshelf.io/resource/knock.md): Agentic customer engagement infrastructure for lifecycle and transactional messaging across email, in-app, push, SMS, and chat. (pricing: not verified)
- [Plunk](https://devshelf.io/resource/plunk.md): Open-source transactional email platform supporting automated workflows, marketing campaigns, and unified contact management. (pricing: Freemium, Pay-as-you-go)
- [Loops](https://devshelf.io/resource/loops.md): Email sending platform for SaaS teams to manage marketing, product, and transactional emails with API and workflow support. (pricing: Freemium)

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