Notifuse is an open-source, self-hosted emailing platform designed for developers and businesses seeking full control over their email infrastructure. Built with Go and React, it provides enterprise-grade features—including visual email editing, transactional APIs, and real-time analytics—without the recurring costs of SaaS alternatives like Mailchimp or Brevo. It’s ideal for teams that prioritize data privacy, customization, and scalability while avoiding per-email pricing models. Whether you’re sending marketing campaigns or transactional alerts (like password resets or order confirmations), Notifuse gives you a complete email stack under your own infrastructure.
What You Get
- Visual Email Builder - Drag-and-drop editor using MJML components with real-time preview to design responsive email templates without coding.
- Transactional API - RESTful endpoints for programmatic email sending with support for dynamic content via Liquid templating (e.g., {{ contact.first_name }}).
- Multi-Provider SMTP Support - Connect to Amazon SES, Mailgun, Postmark, Mailjet, SparkPost, or any SMTP server for reliable email delivery.
- A/B Testing - Built-in testing for subject lines, content variations, and send times to optimize campaign performance.
- Contact Profiles & Custom Fields - Store and segment subscribers with custom metadata for targeted campaigns.
- S3 File Manager - Upload and serve email assets (images, PDFs) via S3 with CDN integration for faster loading.
- Webhook Integration - Receive real-time events (opens, clicks, bounces) via HTTP callbacks for downstream automation.
- Workspace Management - Multi-tenant support enabling agencies or teams to manage multiple clients from a single instance.
- Real-time Analytics Dashboard - Track opens, clicks, delivery rates, and conversions with detailed campaign reports.
Common Use Cases
- Building a multi-tenant SaaS dashboard with branded email campaigns - Agencies use Notifuse to send custom-branded newsletters for each client while managing everything from a single self-hosted instance.
- Creating a mobile-first e-commerce platform with transactional emails - E-commerce businesses replace third-party email services to send order confirmations, shipping updates, and promotional emails using the REST API and Liquid templates.
- Problem: High SaaS email costs at scale → Solution: Self-hosted Notifuse - Companies sending over 100k emails/month reduce costs by 80% by migrating from Mailchimp to Notifuse, retaining full data control and eliminating per-email fees.
- DevOps teams managing microservices across multiple cloud providers - Teams deploy Notifuse on Kubernetes or Docker to centralize email delivery, integrate with existing CI/CD pipelines, and monitor deliverability via webhooks.
Under The Hood
Notifuse is a modern, multi-layered notification and automation platform that combines a robust backend API built with Go and a rich, interactive frontend console developed with TypeScript and React. The system is structured to support complex workflows, email delivery automation, and extensible UI components, making it a versatile tool for developers and teams managing communication systems.
Architecture
The system adopts a monolithic architecture with distinct frontend and backend layers, ensuring clear separation of concerns.
- The backend API is built using Go, offering performance and reliability for handling automation logic and integrations.
- The frontend is structured as a component-based React application with extensive use of hooks and context for state management.
- Design patterns such as factory and strategy are applied to support flexible email providers and template systems.
Tech Stack
The project leverages contemporary technologies to deliver a feature-rich and scalable platform.
- The backend is powered by Go 1.25, while the frontend uses TypeScript and React with modern UI libraries like Ant Design and Tiptap.
- It integrates a wide range of tools including TanStack Router, XYFlow for visual automation flows, and AWS SDKs for cloud integration.
- Development and testing are supported by Vite, Playwright, and Docker, ensuring a smooth development and deployment pipeline.
Code Quality
The codebase reflects a mixed state of quality with strengths in testing and structure, but some areas show room for improvement.
- Comprehensive test suites are in place with Vitest and Playwright, covering unit and end-to-end scenarios.
- Error handling is present across layers, though consistency in patterns remains a challenge.
- Code style and linting are configured, supporting maintainability and readability.
What Makes It Unique
Notifuse distinguishes itself through its innovative UI and extensible automation capabilities.
- The platform includes an AI assistant chat component directly within the console, offering real-time guidance during automation setup.
- It features a node-based flow editor for building complex automation workflows, with dedicated configuration and visualization components.
- Strong internationalization support through Lingui and multi-language UI elements enhance global usability.
- A modular component architecture improves maintainability and enables extensibility for custom automation types.