Roundcube is a browser-based email client that provides a desktop-like interface for accessing IMAP mailboxes. It enables users to manage messages, contacts and folders through a responsive web interface without needing a dedicated desktop application.
The software is designed for individuals, hosting providers and organisations offering webmail access to existing email services. It connects to IMAP servers for receiving and managing messages, with SMTP handling outgoing mail. User preferences and address book information can be stored in supported relational databases.
Roundcube has a flexible architecture that allows its appearance and functionality to be customised. Its interface accommodates different screen sizes, while extensions provide additional features beyond conventional email management.
This is free and open source software.
Key Features
- Full support for MIME and HTML email messages.
- Compose messages using rich text or Markdown.
- Send attachments and manage multiple sender identities.
- Advanced message searching with operators for narrowing results.
- Threaded conversations for grouping related messages.
- Drag-and-drop message organisation and folder management.
- Address book with contact groups and find-as-you-type searching.
- Import and export contact information.
- LDAP integration for accessing external address books.
- Shared IMAP folders and access control list support.
- OAuth2 and OpenID Connect authentication capabilities.
- Responsive interface with light and dark display modes.
- Quick actions for common operations in message lists.
- Spell checking and reusable message response templates.
- Internationalised domain names and SMTPUTF8 support.
- Built-in caching to improve mailbox responsiveness.
- Support for PGP encryption through the appropriate functionality.
- Customisable skins and an extension API for additional capabilities.
- Interface translations for more than 80 languages.
Website: roundcube.net
Support:
Developer: Roundcube development team and contributors
License: GNU General Public License v3.0
RoundCube is written in PHP. Learn PHP with our recommended free books and free tutorials.
Related Software
| Web-Based Email Clients | |
|---|---|
| RoundCube | Browser-based multilingual IMAP client |
| Cypht | Webmail aggregator |
| SnappyMail | Simple, modern, lightweight fork of RainLoop |
| Mailpile | Client with user-friendly encryption and privacy features |
| Nextcloud Mail | Email client application for the Nextcloud platform |
| Afterlogic WebMail Lite | Modular IMAP client with contacts, encryption and admin tools |
| JMAP Webmail | JMAP client with shared inboxes, contacts and calendars |
| Tachyon | Lightweight, privacy-focused client with Sieve and DAV support |
| SquirrelMail | Webmail package written in PHP |
Read our verdict in the software roundup.
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