listmonk - Free and open source self-hosted newsletter, mailing list manager, and transactional mails
Send e-mail campaigns and transactional e-mails. High performance and features packed into one app.
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Listmonk is a free, open-source, high-performance self-hosted newsletter, mailing list, and transactional email manager designed for developers and organizations seeking full control and privacy.
🚀 Overview
Listmonk is a standalone, self-hosted application that packs powerful newsletter and mailing list management into a single binary, offering high performance and feature richness without the bloat of SaaS alternatives.
It solves the problem of expensive, privacy-invasive hosted services like Mailchimp by providing a lightweight, scalable solution that handles millions of subscribers, SQL-based segmentation, real-time analytics, and high-throughput email queues—all while running on minimal resources (e.g., a production instance sending 7M+ emails uses a fraction of one CPU core and 57MB RAM).
Built for developers, indie makers, and teams who value self-hosting, data sovereignty, and extensibility. I built it to create a modern, single-binary alternative that's easy to deploy anywhere, with extensive API coverage, templating, and support for transactional mails and messengers like SMS/WhatsApp.
✨ Key Features
- High-performance mailing lists: Manage millions of subscribers with single/double opt-in, SQL querying/segmentation, and multi-threaded SMTP queues with rate limiting.
- Built-in analytics: Visualize campaign performance, bounces, top links, and more.
- Advanced templating: Use Go templating language with logic, 100+ functions, drag-and-drop builder, WYSIWYG, Markdown, or raw HTML for dynamic emails.
- Transactional emails & extensibility: API for transactional mails; messenger webhooks for SMS, WhatsApp, FCM; full API coverage.
- Privacy & security: Full subscriber privacy controls, OIDC SSO, granular roles/permissions, API tokens.
- Optional: Media library with S3 backend, internationalization.
🛠 Tech Stack
- Frontend: Vue.js, Buefy
- Backend: Go
- Database: PostgreSQL
- Auth: OIDC SSO / Built-in with granular roles
- Hosting: Self-hosted (Docker, single binary), runs everywhere
👥 Who Is This For?
This project is useful for:
- Developers who want to self-host scalable newsletter infrastructure
- Teams looking for privacy-focused mailing list management with analytics
- Indie makers building cost-effective alternatives to SaaS email tools
📸 Screenshots / Demo
- Live demo: https://demo.listmonk.app
- GitHub: https://github.com/knadh/listmonk
🔥 Project Status
- 🟢 Actively building
Last updated: 2026-03-24
❓ FAQ
Is this project free?
Yes — Free and open source software licensed under AGPLv3. (High-performance self-hosted solution with no costs beyond your infrastructure.)
Is the source code available?
Yes — https://github.com/knadh/listmonk
Can I contribute?
Yes — Follow the developer setup docs at https://listmonk.app/docs/developer-setup, open issues, or submit PRs on GitHub. 237 contributors already!
📬 Contact & Links
- Website: https://listmonk.app
- GitHub: https://github.com/knadh/listmonk
- Twitter/X:
- Email:
Built with ❤️ and kept warm on WarmIndex.
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