roundcube/roundcubemail
Roundcubemail
Roundcube is an open-source, self-hosted webmail client designed for reading, composing, and organizing emails stored on remote servers using IMAP and SMTP protocols. It provides a browser-based interface that allows users to manage their mailboxes and sender identities through a secure communication platform.
The platform is distinguished by its modular architecture, featuring a plugin-based extension system for adding new functional modules and a skin-based theme layer for customizing the visual appearance and responsive layouts. It further supports embedding its interface into external cloud productivity suites and collaborative workspaces using single sign-on.
Core capabilities include encrypted email communication, collaborative address book management via directory connectors, and advanced message organization using threaded listings and global search. The system incorporates security measures such as two-factor authentication, brute-force prevention, HTML content sanitization, and shared folder access control lists.
The software includes built-in tools for mailbox data import and export, as well as scripts for configuration migration during system upgrades.
Features
- Webmail Clients - Provides a comprehensive browser-based interface for users to read, compose, and organize emails stored on remote servers.
- Email - Provides a full-featured browser-based client for sending, receiving, and managing emails on remote servers.
- Email Message Organization - Organizes communications using threaded listings, folder management, and drag-and-drop actions via server protocols.
- Professional Email Composition - Supports professional message creation with multiple sender identities, response templates, and integrated spell checking.
- Mailbox State Synchronizers - Synchronizes mailbox state by mapping web interface actions to remote server operations via the IMAP protocol.
- Email Clients - Serves as a self-hosted, open-source communication platform for reading and composing emails.
- IMAP Client Interfaces - Implements a browser-based interface for managing messages and folders on remote servers using the IMAP and SMTP protocols.
- HTML Content Sanitization - Implements a strict HTML whitelist filter pipeline to prevent cross-site scripting attacks.
- Email Security - Protects message privacy through encryption and secures accounts with two-factor authentication and brute-force prevention.
- OIDC Authentication Plugins - Secures user access by integrating with external identity providers through OpenID Connect flows.
- Single Sign-On Providers - Delegates user verification to external identity providers using discovery and logout flows for single sign-on.
- Hook-Based Plugin Systems - Provides a modular extension system using hooks to add new functional modules and UI capabilities.
- Extensible Web Platforms - Features a modular architecture with a plugin-based extension system for adding new functional modules.
- Collaborative Address Books - Implements a contact management system using directory connectors and fast lookup interfaces for organizing recipients.
- Global Search Tools - Provides a fast lookup interface to perform global searches across messages and address book entries.
- Sender Identity Management - Allows users to create and switch between multiple distinct identities for outgoing email communication.
- Complex Search Querying - Supports complex query operators to filter and locate specific messages within large email datasets.
- Contact Management - Manages address books and contact groups using directory connectors and fast lookup interfaces.
- Access Control Lists - Manages shared folder permissions and restricts user access to mail directories using access control lists.
- Brute Force Protections - Protects user accounts using brute-force prevention, two-factor authentication, and external identity provider support.
- Contact Directory Connectors - Resolves contact information by bridging the user interface to external directory services and databases.
- Encrypted Email Clients - Secures message content and ensures communication privacy by integrating encryption standards into the webmail interface.
- Message Encryption - Ensures the privacy and confidentiality of sent and received messages using industry encryption standards.
- Third-Party Plugins - Integrates third-party modules to add expanded features such as calendars and account support.
- Responsive Layout Customizers - Supports custom skins and responsive layouts to adapt the visual experience for different devices.
- Theme Customization - Provides interfaces for applying custom skins to change the overall look and feel of the web interface.
- Skinning Engines - Uses a template-based skinning engine to separate visual presentation from business logic.
- Email Servers - Browser-based IMAP client for managing email accounts.
- Email Solutions - Listed in the “Email Solutions” section of the Awesome Selfhosted awesome list.
- Webmail Clients - Feature-rich browser-based IMAP email client.
