RoundCube Webmail (aka. RC) is a a standards-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking. RoundCube Webmail is written in PHP and requires a MySQL database. The user interface is fully skinnable using XHTML and CSS 2.

Roundcube is an interface to your email system through the web. It has all the functionality you would want from a modern email client, including address books or folder manipulation. RoundCube is also highly customizable. Your systems administrators can write and install skins to let it fit your corporate identity.

Login

Open the URL which you installed RoundCube Webmail to eg. ​http://demo.roundcube.net. The site shows the Login Screen, which is used to authenticate a user. Simply type in your username and password provided to you by your system administrator. On our example page use the username demo@… and the password rcdmo1.

The screenshot above shows the RC Login Screen

Overview

The next screen, after you logged in, gives you an overview of you Inbox and mail functions.

The screenshot above shows overview screen.
1 - Folder list; a list of IMAP folders you are currently subscribed to.
2 - Mail Buttons
3 - Application Buttons
4 - Message list