The Roundcube Webmail suite
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Roundcube Webmail

Build Status


This is just a snapshot from the GIT repository and is NOT A STABLE version of Roundcube. It's not recommended to replace an existing installation of Roundcube with this version. Also using a separate database for this installation is highly recommended.


Roundcube Webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an email client, including MIME support, address book, folder management, message searching and spell checking. Roundcube Webmail is written in PHP and requires the MySQL, PostgreSQL or SQLite database. With its plugin API it is easily extendable and the user interface is fully customizable using skins which are pure XHTML and CSS 2.

The code is mainly written in PHP and is designed to run on a webserver. It includes other open-source classes/libraries from PEAR, an IMAP library derived from IlohaMail the TinyMCE rich text editor, Googiespell (archive) library for spell checking or the HTML5-PHP sanitizer by Masterminds.

The current default skin 'Larry' was kindly created by FLINT / Büro für Gestaltung, Berne, Switzerland.


For detailed instructions on how to install Roundcube webmail on your server, please refer to the INSTALL document in the same directory as this document.

If you're updating an older version of Roundcube please follow the steps described in the UPGRADING file.


Roundcube uses jQuery 3.x for its client and therefore inherits the browser support from there. This currently includes:

  • Chrome: (Current - 1) and Current
  • Edge: (Current - 1) and Current
  • Firefox: (Current - 1) and Current, ESR
  • Internet Explorer: 9+
  • Safari: (Current - 1) and Current
  • Opera: Current


This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License (with exceptions for skins & plugins) as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see

This file forms part of the Roundcube Webmail Software for which the following exception is added: Plugins and Skins which merely make function calls to the Roundcube Webmail Software, and for that purpose include it by reference shall not be considered modifications of the software.

If you wish to use this file in another project or create a modified version that will not be part of the Roundcube Webmail Software, you may remove the exception above and use this source code under the original version of the license.

For more details about licensing and the exceptions for skins and plugins see


Want to help make Roundcube the best webmail solution ever? Roundcube is open source software. Our developers and contributors all are volunteers and we're always looking for new additions and resources. For more information visit


For bug reports or feature requests please refer to the tracking system at Github or subscribe to our mailing list. See for details.

You're always welcome to send a message to the project admin: hello(at)roundcube(dot)net