Roundcube Webmail

Roundcube Webmail is an open-source, self-hosted web application that serves as a multilingual IMAP client. It provides a browser-based interface for managing email accounts, allowing users to access their messages from any compatible web browser without needing a dedicated desktop client. The software acts as a frontend that connects to an existing mail server, enabling users to read, send, and organize their correspondence through a standard web interface.

The software is deployed on a web server and interacts with email servers via the IMAP protocol. It is designed for system administrators who need to provide a full-featured email interface for users on their own infrastructure. Because it is browser-based, it removes the need for individual client configuration on every device, centralizing the mail access point while maintaining the standard functionality of a traditional email application.

Key features

• MIME support for handling various email formats
• Integrated address book for contact management
• Folder management for organizing messages
• Built-in message searching capabilities
• Integrated spell checking
• Plugin API for extending software functionality
• Customizable user interface through skins
• Multilingual support for global accessibility

The application is written in PHP and JavaScript, utilizing a custom framework with an IMAP library derived from IlohaMail. It requires a database backend to store user preferences and contact data, with official support for MariaDB, MySQL, PostgreSQL, and SQLite. The client side relies on jQuery 3.x, which ensures compatibility with current and previous versions of Chrome, Edge, Firefox, Safari, and Opera. This architecture allows administrators to tailor the experience using a variety of skins and plugins to meet specific organizational needs.

Roundcube Webmail is a server-side email client for users and administrators seeking a self-hosted communication interface.