This project provides a full-stack, containerized mail server platform designed for self-hosting. It functions as a complete mail transfer agent that bundles essential services—including SMTP, IMAP, and POP3—into a unified environment. By leveraging container orchestration, it enables the deployment of private email infrastructure that handles message transport, delivery, and user management within a single, manageable service.
The platform distinguishes itself through deep integration with container runtimes and robust configuration flexibility. It supports granular customization via configuration-file injection, initialization-script hooking, and volume-based persistence, allowing administrators to tune mail transport parameters and maintain state across container lifecycles. It also offers advanced operational capabilities such as multi-tenant relay routing, automated container updates, and native support for Kubernetes environments.
Beyond core delivery, the server includes a comprehensive security and filtering suite. It integrates modular middleware for real-time spam and malware analysis, enforces cryptographic signing for message authenticity, and provides automated protection against brute-force attacks and malicious traffic. Administrative tasks are simplified through a dedicated command-line utility for account management, alias configuration, and storage quota enforcement, alongside built-in observability tools for monitoring server health and filtering statistics.
The project is distributed as a container image, with documentation and configuration patterns provided to support deployment across standard container runtimes and orchestration platforms.
