what is roundcubemail fr?

Roundcube is a free, open-source webmail application. It is the kind of software you install on a web server so that people can check and send email through a browser, without needing a separate desktop email program. It connects to email accounts using IMAP, which is the standard protocol that email servers use to let you read messages remotely. The interface is designed to feel more like a desktop application than a typical web page. It includes the features you would expect from a full email client: reading and composing messages, support for attachments, an address book, folder management, message search, and spell checking. The application is also multilingual, meaning the interface can be displayed in many languages. Roundcube is written in PHP and runs on a web server. It requires a database to store things like address books, preferences, and session data, it supports MySQL, MariaDB, PostgreSQL, and SQLite. The frontend is built with PHP and JavaScript. The project has a plugin system that allows developers to add new features without modifying the core code. The visual appearance can be changed using custom skins. Both plugins and skins have a licensing exception that lets them be developed and distributed more freely than the core code, which is released under the GNU General Public License version 3. This repository is the development snapshot, meaning it reflects the current state of the codebase and may not be stable. People running Roundcube on a live server are advised to use official stable releases rather than cloning from this repository directly. It is maintained by a team of volunteers and is one of the more widely used self-hosted webmail solutions available.