Attention
This version of Roundcube is NOT STABLE; it is merely a snapshot taken from the GIT repository. It is not advised to install this version of Roundcube in place of an existing installation.
Additionally, it is strongly advised that you use a different database for this installation.
Introduction
IMAP client with a user interface resembling an application, Roundcube Webmail is browser-based and multilingual.
Including MIME support, address book, folder management, message searching, and spell checking, it offers all the features you would expect from an email client.
The MySQL, PostgreSQL, or SQLite database is needed to run Roundcube Webmail, which is developed in PHP. The user interface may be completely customized via skins and is easily extensible thanks to its plugin API.
Typically, PHP and Javascript are used to create code that runs on web servers. It uses a number of additional libraries, has a unique framework with an IMAP library adapted from IlohaMail, and offers both of these features (see composer.json and jsdeps.json files).

Installation
Please refer to the INSTALL document in the same directory as this document for comprehensive instructions on setting up Roundcube webmail on your server.
Please adhere to the procedures outlined in the UPGRADING file when updating an earlier version of Roundcube.
Birdie Support
Roundcube derives its client’s browser support from the fact that it uses jQuery 3. x (and other libs). Currently, these are present:
Firefox: (Current – 1) and Current, ESR Chrome: (Current -1), Current, and Edge: (Current -1), Current
Web Explorer: 11+
Current Opera: Current Safari: (Current – 1)
License
This programme is free software; you may redistribute it and/or modify it in accordance with the rules of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License or (at your discretion) any subsequent version (with the exception of skins and plugins).
Without any warranty, not even the implicit warranty of merchantability or fitness for a particular purpose, this programme is provided with the hope that it will be helpful.

More information is available in the GNU General Public License.
Also Read: Software to Enhance Your Business Life: Advanced Software for Your Company’s Success
A copy of the GNU General Public License ought to have come with this programme. Otherwise, visit www.gnu.org/licenses/.
The following exception is added for this file, which is a component of the Roundcube Webmail Software: The Roundcube Webmail Software is not considered modified by plugins and skins that only call its functions and include it by reference for that purpose.
Remove the aforementioned exception and use this source code in accordance with the original version of the license if you want to use it for another project or make a modified version that won’t be a part of the Roundcube Webmail Software.
Visit roundcube.net/license for additional information regarding licensing as well as the exceptions for skins and plugins.
Contribution
Want to make Roundcube the greatest webmail programme ever? Open source software is Roundcube. All of our developers and contributors are volunteers, and we’re constantly seeking fresh resources and upgrades. Visit roundcube.net/contribute for additional information.
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