Claws Mail/pl

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This page is a translated version of the page Claws Mail and the translation is 15% complete.

Claws Mail is a GUI mail client forked from Sylpheed. In Claws Mail FAQ, it is said: Claws Mail has many extra features compared to Sylpheed and is more powerful, yet is just as fast, lightweight and stable.

It is in active development, can be extended by many plugins, and allows importing of mbox-format mailboxes (coming from Thunderbird, for example). Its native mailbox format is wikipedia:MH Message Handling System, although the mbox format can be used with a plugin. Claws Mail cannot write HTML messages (in keeping with the Keep It Simple principle), but can read them using plugins.

For Gentoo Linux it is provided by the mail-client/claws-mail package for all architectures except ia64.


USE flags

USE flags for mail-client/claws-mail An email client (and news reader) based on GTK+

archive Enable archiving plugin
bogofilter Build mail-filter/bogofilter plugin
calendar Add support for calendars (not using mcal!)
clamav Add support for Clam AntiVirus software (usually with a plugin)
dbus Enable dbus support for anything that needs it (gpsd, gnomemeeting, etc)
debug Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see
doc Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
gdata Enable plugin for access to Google data providers
gnutls Prefer net-libs/gnutls as SSL/TLS provider (ineffective with USE=-ssl)
imap Add support for IMAP (Internet Mail Application Protocol)
ldap Add LDAP support (Lightweight Directory Access Protocol)
libcanberra Enable sound notification in connection with USE=notification
libnotify Enable notification on the desktop in connection with USE=notification
litehtml Enable dev-libs/gumbo html viewer plugin
networkmanager Enable net-misc/networkmanager support
nls Add Native Language Support (using gettext - GNU locale utilities)
nntp Add support for newsgroups (Network News Transfer Protocol)
notification Notification for new mail in different way, see also USE flags libcanberra, libindicate and libnotify
oauth Enable OAuth2 authentication support
pdf Add general support for PDF (Portable Document Format), this replaces the pdflib and cpdflib flags
perl Add optional support/bindings for the Perl language
pgp Enable PGP support
python Enable plugin for Python scripting
rss Enable support for RSS feeds
session Add persistent session support
sieve Build plugin for sieve filter support
smime Build plugin for S/MIME support
spam-report Enable plugin for spam reporting to various services
spamassassin Build mail-filter/spamassassin plugin
spell Add dictionary support
startup-notification Enable application startup event feedback mechanism
svg Add support for SVG (Scalable Vector Graphics)
valgrind Enable annotations for accuracy. May slow down runtime slightly. Safe to use even if not currently using dev-debug/valgrind
webkit Add support for the WebKit HTML rendering/layout engine
xface Add xface support used to allow a small image of xface format to be included in an email via the header 'X-Face'


Plugins are compiled with Claws Mail when the appropriate USE flags are set — bogofilter, spamassassin or pdf, for example.

Before version 3.9.1 plugins had to be separately emerged.

Spam Filtering

  • Simple way: Bogofilter is a powerful Bayesian filter which doesn't need to be configured. It quickly learns from the user's spam and ham classifications in Claws Mail. It is the preferred spam filter for desktop computers. Set the bogofilter USE flag to compile the plugin with Claws Mail.
  • Hard way: Spamassassin is a huge mail filtering system, using Bayesian filtering and external spam-definition resources. It must be extensively configured and its daemon (spamd) must be running for Claws Mail to use it. It is the preferred spam filter for mail servers. Set the spamassassin USE flag to compile the plugin with Claws Mail. Some information can be found in the articles Complete Virtual Mail Server and Mailfiltering Gateway.


Create a /etc/portage/package.use/claws-mail file to activate the desired USE flags (or add them to the /etc/portage/package.use file). To set bogofilter, pgp and archive, for example:

root #echo 'mail-client/claws-mail bogofilter pgp archive' > /etc/portage/package.use/claws-mail

Then emerge Claws Mail:

root #emerge --ask mail-client/claws-mail

Configuration and Usage

  • Accounts, mail filtering, models, actions, labels, etc. are set in the Configuration menu;
  • main configuration is done in Configuration > Preferences…;
  • plugins are (de)activated in Configuration > Plugins… and configured in Configuration > Preferences…;
  • the archive plugin is run from Tools > Create Archive…;
  • the user interface can be modified: lists headers in global or message views, icons, fonts;
  • the address book can import and export several formats.


mail-client/clawsker can be installed to edit many preferences which are not in the GUI:

root #emerge --ask mail-client/clawsker

Then launch it when Claws Mail is not running:

user $clawsker

Plik preferencji Claws Mail znajduje się w ~/.claws-mail/clawsrc.


Wiele motywów ikon może zostać zainstalowanych za pomocą x11-themes/claws-mail-themes:

root #emerge --ask x11-themes/claws-mail-themes

External resources