DavMail

DavMail is an open-source gateway application that enables mail clients to connect to Exchange and Office 365 servers. It acts as a proxy that translates proprietary protocols into standard formats, allowing users to access their mail, calendars, and contacts using any client that supports standard protocols. This allows for the use of a wide variety of email software regardless of the underlying server architecture.

The software is deployed as a server that runs on Windows, macOS, or Linux. It can be installed as a standalone application, a Debian package, an RPM, a Flatpak, or as a Docker container. It facilitates connectivity even when accessing servers via Outlook Web Access over the internet, ensuring that users can maintain their workflow across different network environments and platforms.

Key features

• Support for POP, IMAP, and SMTP protocols
• Integration with CalDAV for calendar synchronization
• Integration with CardDAV for contact management
• LDAP support for directory services
• Compatibility with Exchange and Office 365 servers
• Cross-platform availability for Windows, macOS, and Linux
• Ability to connect through Outlook Web Access

DavMail is designed for users who prefer to use third-party mail clients instead of the native Outlook application. By converting the server-side protocols, it removes the requirement for specific proprietary software to manage corporate email accounts. The architecture allows it to sit between the mail client and the server, handling the translation of requests in real time. The project is maintained with builds available across various distribution formats, including platform-independent packages and specific OS installers, to ensure compatibility with different operating system environments.

This tool serves as a protocol translator for users requiring standard email and calendar access on non-native platforms. It provides a bridge for those who need to integrate Exchange services into a diverse set of open-source or third-party communication tools.