Claws Mail is an email client and news reader, based on GTK+, that features a familar, intutivive interface with easy, flexible configuration.The appearance and interface are designed to be familiar to new users coming from other popular email clients, as well as experienced users. Almost all commands are accessible with the keyboard. The messages are managed in the standard MH format, which features fast access and data security. You'll be able to import your emails from almost any other email client, and export them just as easily.There are lots of extra functionality, like an RSS aggregator, calendar, or laptop LED handling, are provided by extra plugins.Most of the Claws Mail features are already available out of the box such as:Spell checking, SSL, LDAP, and IMAP/NNTP. However many other features are that are distributed with the install have to be activated via CONFIGURATION

 PLUG-IN menu. These incluse. AddressKeeper : Allows automatically adding recipients' email addresses to the addressbook when writing or replying to emails.Attremover : Allows removing attachments from received emails.AttachWarner : Warns when the user composes a message mentioning an attachment in the message body without attaching any files to the message.BSFilter : A bayesian anti-spam plugin.Fetchinfo : Adds information about reception time, account, etc in headers.Gtkhtml2Viewer : Displays HTML emails.Notification : Provides various ways to notify the user of new and unread email.PGP and S/Mime plugins : Enables digital signature and encryption handling.RSSyl : Allows you to read your favourite newsfeeds in Claws. RSS 1.0, 2.0 and Atom feeds are currently supported.SpamReport : Allows you to report spam messages to various services (SpamCop, spam-signal.fr, Debian's mailing-lists spam handlers)TNEF Parse : Enables reading application/ms-tnef attachments.vCalendar : Enables vCalendar message handling like that produced by Evolution or Outlook, and handles webCal subscriptions. It provides a personal calendar and public calendar import and export.Claws Mail is distributed under the GPL.