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RoundCube is a web-based IMAP email client written in the PHP programming language. RoundCube's most prominent feature is the pervasive use of Ajax technology to present a more fluid and responsive user interface than that of traditional webmail clients. After about two years of development, the first stable release of RoundCube was announced in early 2008.
Released under the GNU General Public License, RoundCube is free software.
- PHP- and (Postgresql-MySQL-Sqlite)-based
- Multilingual capabilities
- Full support for MIME and HTML messages
- Compose messages with attachments
- IMAP Support
- Multiple sender identities
- Basic address book
- Find-as-you-type address book integration
- Forwarding messages with attachments
- Create or remove custom message folders
- Built-in caching for fast mailbox access
- Support for external SMTP server
- Advanced user interface
- Unlimited users and messages
- Complete customization with skins
- Customizable Themes
A variety of plug-ins are available from the MyRoundcube project..