RoundCube Webmail is a platform-independent, web-based, freely distributed, feature-rich and open source application that has been designed from the offset to act as a browser-based webmail client or IMAP (Internet Message Access Protocol) client. It is the favorite webmail client of numerous web hosting services, along with the Horde Groupware Webmail and SquirrelMail projects.
Features at a glance
Key features include a support for IMAP folder management, support for external SMTP (Simple Mail Transfer Protocol) servers, Support for ACL (Access Control Lists), VCard-based full featured address book that offers support for LDAP (Lightweight Directory Access Protocol) connectors and groups, as well as complete support for HTML (HyperText Markup Language) and MIME (Multi-Purpose Internet Mail Extensions) messages.
In addition, the application offers sophisticated privacy protection for its users, which will be able to use multiple sender identities, manage email messages with drag and drop, compose messages with attachments, find contacts from the integrated address book as they type, compose Rich Text/HTML messages, search contacts and messages, use preserved response templates, export and import messages, and forward e-mails with attachments.
Beautiful and attractive interface
RoundCube Webmail features a beautiful and attractive interface that will conquer you from the get-go. It is translated in over 70 languages, supports threaded message listing, spell checking, shared and global IMAP folders, built-in caching, an unlimited number of messages and users, skins through a powerful template system, extensions through a state-of-the-art plugin architecture, and IDNA (Internationalizing Domain Names in Applications).
Under the hood, supported web browser, requirements, and more
The application is written in the widely-used PHP server-side scripting language and its compatible with the Apache, nginx, Lighttpd, Hiawatha or Cherokee web servers. It requires a wide range of PHP modules, and has been successfully tested with the latest version of the Mozilla Firefox, Google Chrome, Safari, Opera, SeaMonkey and Internet Explorer web browsers.