+ o BSFilter
+ Checks all messages received from IMAP, POP or local accounts using
+ BSFilter, a bayesian spam filter program, which has to be installed
+ locally. Messages identified as spam can be deleted or saved to a
+ designated folder.
+ Bsfilter is available from http://sourceforge.jp/projects/bsfilter/.
+
+ o Clamd
+ Uses the Clam AntiVirus in daemon mode to scan received messages from
+ IMAP, POP or local accounts. Scanning is done through a socket to the
+ daemon, so it has to be previously configured to allow this.
+ Clam AntiVirus is available from http://www.clamav.net/.
+
+ o Fetchinfo
+ Modifies downloaded messages and inserts special headers containing
+ some download information: UIDL, Claws Mail account name, POP server,
+ user ID and retrieval time. These headers can be used later for more
+ elaborate filtering or processing rules.
+
+ o Fancy
+ Renders HTML mails and HTML parts of multipart messages using the GTK+
+ port of the WebKit library. External content is blocked by default
+ (including images) to avoid remote tracking, but can be enabled either
+ globally or just on the displayed message.
+ GTK+ WebKit is available from http://trac.webkit.org/wiki/WebKitGTK/.
+
+ o GData
+ Includes your Gmail account contacts in the list generated for
+ Tab-address completion on compose window, using the GData library.
+ Gdata library is available from https://live.gnome.org/libgdata/.
+
+ o MailMbox
+ Handles mailboxes in Mbox format using the libEtPan! library. Mbox
+ files can be added to the folder tree and used like regular mailboxes.
+ LibEtPan! is available from http://www.etpan.org/.
+
+ o Newmail
+ Writes a header summary to a log file for each mail received after
+ sorting. The file for the summary is ~/Mail/NewLog.
+
+ o Notification
+ Provides various ways of notifying the user of new and unread email.
+ Current methods include: a banner, a popup window, a user command,
+ a message to a LCD daemon, a system tray icon and an indicator icon.
+ Sound notifications are also possible through libcanberra. Each method
+ can be customized in detail through the plugin preferences.
+ Indicator library is available from https://launchpad.net/libindicator/
+ and libcanberra from http://0pointer.de/lennart/projects/libcanberra/.
+
+ o Perl
+ Extends the filtering possibilities of Claws Mail. Provides a Perl 5
+ interface to Claws Mail's filtering mechanism, allowing the use of full
+ Perl power in email filters. A conversion script is provided to
+ translate user rules into perl rules suitable for this plugin.
+ Perl is available from http://www.perl.org/.
+
+ o PDF Viewer
+ Displays Portable Document Format (PDF) and PostScript attachments
+ within the message view using Poppler. PostScript attachments are
+ converted to PDF on the fly by the gs tool, which has to be installed
+ first. The gs tool is available from http://pages.cs.wisc.edu/~ghost/
+ The Poppler library is available from http://poppler.freedesktop.org/.