Best Mail Servers for Docker

Provide your clients with reliable, enterprise-grade email hosting alongside a range of additional services. This outstanding option caters to service providers and is adaptable for a user base ranging from thousands to millions. Attract more clients by presenting a top-tier email server solution renowned for its flexibility, seamlessly integrating with your current systems. You can oversee your email, coordinate and share calendars, and synchronize your mobile devices, all supported by a robust and secure mail server. This solution is ideal for organizations of any scale. Axigen possesses extensive expertise; explore its diverse functionalities and select the ones that align with your needs. Effortlessly manage your emails while enhancing productivity with tools for calendars, tasks, and notes. Experience user-friendly browser functionality with features like keyboard shortcuts, drag-and-drop capabilities, real-time email viewing, frequently accessed folders, customizable email filters, vacation replies, and personal blacklist/whitelist options, ensuring a comprehensive email management experience. With such a versatile system, businesses can streamline their communication effectively.

Mailu is a versatile and straightforward mail server offered through a collection of Docker images, designed as free and open-source software that encourages user feedback and contributions. The objective of this project is to deliver an easy-to-install and maintain mail server that is comprehensive and avoids the inclusion of proprietary tools or unrelated features that are frequently part of mainstream groupware solutions. Key functionalities of Mailu encompass: A standard email server setup supporting IMAP and IMAP+, SMTP, and Submission with automated configuration profiles for various email clients. Sophisticated email capabilities, including aliases, domain aliases, and custom routing options. Web-based access featuring multiple webmail interfaces alongside an administrative dashboard. User-centric functionalities such as aliases, auto-reply, auto-forward, and the ability to fetch accounts from other servers. Administrative features that cater to global management, making announcements, domain-specific delegation, and setting quotas. Robust security measures that enforce TLS protocols, integrate DANE and MTA-STS, utilize Let's Encrypt for certificates, provide outgoing DKIM signatures, and incorporate an anti-virus scanner alongside Snuffleupagus for enhanced protection against malware and harmful attachments. Effective anti-spam tools that include auto-learning algorithms, greylisting techniques, DMARC and SPF support, and measures to prevent email spoofing. Overall, Mailu stands out as a comprehensive solution for users seeking a reliable and secure mail server environment.

Mailcow: Dockerized is a self-hosted email and groupware solution built on Docker technology. It incorporates a variety of established and reliable components that work together to create a hassle-free email server experience. Each application is encapsulated within its own container, all linked through a bridged network for seamless interaction and functionality. This modular approach enhances the scalability and maintainability of the server setup.

Citadel offers email, collaboration, groupware, and content management solutions that can be quickly deployed on your own servers or in the cloud. With its unique room-based architecture, Citadel is not only user-friendly but also highly adaptable and robust. Unlike any other platform, it successfully integrates a wide range of features while maintaining a familiar and cohesive interface. This software is entirely open source, distributed under the GNU General Public License, ensuring users access the full version without limitations or cost. You can download the most advanced version available here, and the best part is that it’s all provided at no charge. This makes Citadel an exceptional choice for those seeking powerful and comprehensive software solutions without the financial burden often associated with enterprise editions.