Claws Mail

E-mail client software

Claws Mail

Main window of Claws Mail 2.7.1

Developer(s)| The Claws Mail Team
Initial release| May 11, 2001; 22 years ago (2001-05-11)
Stable release|

4.2.0[1] / 20 November 2023

Preview release| None  [±]
Repository|

* git.claws-mail.org?p=claws.git;a=summary

Written in| C (with GTK)
Operating system| BSD, Linux, macOS, Solaris, Unix, Windows
Type| E-mail client, news client
License| GPL-3.0-or-later
Website| www.claws-mail.org

Claws Mail is a free and open-source, C/GTK-based e-mail client, which is both lightweight and highly configurable.[2][3] Claws Mail runs on both Windows[4] and Unix-like systems such as Linux, BSD, and Solaris. It stores mail in the MH mailbox format. Plugins allow to read HTML mail, but there is none to compose HTML messages.[5]

## Features[edit]

Claws Mail is also a news client and RSS aggregator. Further features – integrated or supplied via plugins – include:[6][7]

* Search and filtering, optionally via Perl and Python scripting
* Security (GPG, SSL, anti-phishing)
* Anti-spam (SpamAssassin, Bogofilter)
* Per-folder preferences
* Optional external editor
* Templates for messages
* Themes support, customisable toolbars, X-Face support, foldable quotes
* Viewers for HTML mail (Dillo, Gtkhtml2, Fancy (WebKit), LiteHTML)
* TNEF attachment parser
* PDF viewer
* Various notification plugins, e. g. trayicon and LED handler
* Archiving, import/export from standard formats[8]
* Support for Mbox mailbox format
* Calendaring with events as kind of messages[9]

## History[edit]

Development started in April 2001 as Sylpheed-Claws off the development version of Sylpheed, where new features could be tested and debugged. In August 2005 Claws Mail forked completely from Sylpheed.

## See also[edit]

* Free and open-source software portal

* List of Usenet newsreaders
* Comparison of Usenet newsreaders
* Comparison of email clients
* Comparison of feed aggregators

## References[edit]

1. ^ Paul Mangan (20 November 2023). "Claws Mail 4.2.0 and 3.20.0 Unleashed!!!". Retrieved 29 November 2023.
2. ^ Cat Ellis (2017-05-27). "Claws Mail review. Manage multitudes of messy messages". techradar. "Claws Mail looks simple, but is packed with advanced tools for power users. New users might be happier with Mailbird or Thunderbird, but you'd be hard pressed to find a better tool for taming multiple inboxes."
3. ^ Razvan Serea (2017-12-24). "Claws Mail 3.16.0.1". Neowin. "The Claws Mail developers try hard to keep it lightweight, so that it should be usable on low-end computers without much memory or CPU power."
4. ^ "Claws Mail for Windows".
5. ^ "General Information - Claws Mail FAQ".
6. ^ "Claws Mail - Features".
7. ^ "Claws Mail - Plugins".
8. ^ Jon L. Jacobi (2012-07-10). "Linux Favorite Email Client Claws Mail Works Well on Windows". PCWorld.
9. ^ "Claws Mail - vCalendar plugin".

## External links[edit]

* Official website

* v
* t
* e

GTK and its applications

Platform|

| GTK|

* GTK
* GDK
* ATK
* ClutterActor
* GTK Scene Graph Kit
* Pango
* Language bindings
* PyGTK
* PyGObject
* GLib
* GObject
* GIO
* IBus
* Orca
* dconf
* Genie
* Vala
* Keyring
* GNOME-DB
* GVfs
* Hildon
* Librsvg
* MetaTracker
* libxslt
* libxml2

|

freedesktop.org
(shared)|

* AppStream
* D-Bus
* GStreamer
* NetworkManager
* Poppler
* libcanberra
* Wayland
* X.Org Server
* PulseAudio
* PackageKit
* HarfBuzz
* Cairo

Development|

| GUI designer, RAD|

* Glade Interface Designer
* GNOME Builder

|

IDEs|

* Anjuta
* Builder
* Bluefish
* Meld
* Devhelp
* Nemiver
* Poedit
* Geany
* Gtranslator
* gPHPedit
* PyRoom
* SciTE
* UberWriter
* PIDA

GNOME|

* GNOME Shell
* GNOME Games
* Core Applications
* Boxes
* Calculator
* Character Map
* Dictionary
* Disks
* Files
* Software
* Terminal
* Videos
* Web
* other
* dconf editor

Cinnamon|

* Nemo

Xfce|

* Thunar

LXDE|

* PCMan File Manager
* LXMusic

Graphical shells|

* GNOME Shell
* GNOME Panel
* Docky
* GNOME Do
* Avant Window Navigator
* Phosh

3rd-party
applications|

| Office|

* AbiWord
* Dia
* Gnumeric
* Evince (PDF)
* Evolution
* Dictionary
* OCRFeeder

|

Education|

* Gramps
* GCompris
* DrGeo
* GeoGebra
* Ghemical
* Celestia

Graphics|

* GIMP
* GNU Paint
* Inkscape
* gThumb
* gPhoto
* Eye of GNOME
* Sushi
* Shotwell
* F-Spot

Internet|

* Balsa
* Sylpheed
* Claws Mail
* Empathy
* Ekiga
* gtk-gnutella
* GNU Ring
* Vino (VNC server)
* Vinagre
* Uzbl
* transmission-gtk

Audio|

* Audacious
* Banshee
* PulseEffects
* Buzztrax
* Exaile
* Rhythmbox
* Sound Juicer
* SoundConverter
* Quod Libet
* Ex Falso
* EasyTag
* Asunder

Video|

* Avidemux
* Cinelerra
* Cheese
* Gnome MPlayer
* Guvcview
* Kino
* LiVES
* OpenShot Video Editor
* Pitivi

Utilities|

* Archive Manager
* Brasero
* dconf-editor
* Diodon
* gedit
* gnote
* Screenshot
* GParted
* Guake
* Leafpad
* Tilda
* Tomboy
* Wine-Doors
* Workrave

* Category:GTK
* Category:Software that uses GTK
* Commons

* v
* t
* e

Email clients

Free software|

| Current|

* Alpine
* Balsa
* Citadel/UX
* Claws Mail
* Cleancode eMail
* Evolution
* fetchmail
* fdm
* Geary
* getmail
* GNUMail
* Gnus
* Gnuzilla
* IMP
* K-9 Mail
* KMail
* Mahogany
* Mailpile
* Mailx
* Mailx (Heirloom Project)
* Modest
* Mozilla Thunderbird
* Mulberry
* Mutt
* nmh / MH
* OfflineIMAP
* Roundcube
* SeaMonkey
* SquirrelMail
* Sylpheed
* Trojitá
* YAM
* Zimbra

|

Discontinued|

* Arachne
* Beonex Communicator
* BlitzMail
* Classilla
* Columbia MM
* Elm
* FossaMail
* Hula
* Mailody
* Mozilla Mail & Newsgroups
* Nylas N1

Proprietary|

| Freeware/Freemium|

* eM Client
* EmailTray
* Foxmail
* i.Scribe
* Mailbird
* Opera Mail
* Spark
* Spike
* TouchMail
* Vivaldi Mail

|

Retail|

* Hiri
* Bloomba/WordPerfect Mail
* Newton
* HCL Domino
* InScribe
* Apple Mail
* Mail (Windows)
* Microsoft Outlook
* Outlook for Windows
* Novell GroupWise
* Airmail
* Postbox

Shareware|

* Becky!
* Forté Agent
* GyazMail
* The Bat!
* Samsung Email

Donationware|

* Pegasus Mail

Discontinued|

* cc:Mail
* Claris Emailer
* Courier
* Cyberdog
* Cyberjack
* Embrowser
* Eudora
* Mailbox
* Microsoft Entourage
* Microsoft Internet Mail and News
* Microsoft Mail
* MINUET
* Netscape Mail
* Netscape Messenger 9
* NeXTMail
* Outlook Express
* Pine
* Pocomail
* POPmail
* Sparrow
* Turnpike
* WebSpyder
* Windows Live Mail
* Windows Messaging

Related technologies|

* SMTP
* IMAP
* JMAP
* LMTP
* POP
* Push-IMAP
* SMAP
* UUCP

Related topics|

* Email
* Unicode and email

* Category
* Comparison

* v
* t
* e

Cryptographic software

Email clients|

* Apple Mail
* Autocrypt
* Claws Mail
* Enigmail
* GPG (Gpg4win)
* Kontact
* Outlook
* p≡p
* PGP
* Sylpheed
* Thunderbird

Secure
communication|

| OTR|

* Adium
* BitlBee
* Centericq
* ChatSecure
* climm
* Jitsi
* Kopete
* Profanity

|

SSH|

* Dropbear
* lsh
* OpenSSH
* PuTTY
* SecureCRT
* WinSCP
* wolfSSH

TLS & SSL|

* BBM Enterprise
* Bouncy Castle
* BoringSSL
* Botan
* cryptlib
* GnuTLS
* JSSE
* LibreSSL
* MatrixSSL
* NSS
* OpenSSL
* mbed TLS
* BSAFE
* SChannel
* SSLeay
* stunnel
* TeamNote
* wolfSSL

VPN|

* Check Point VPN-1
* Hamachi
* Openswan
* OpenVPN
* SoftEther VPN
* strongSwan
* Tinc
* WireGuard

ZRTP|

* Jitsi
* Linphone
* Jami
* Zfone

P2P|

* Bitmessage
* Briar
* RetroShare
* Tox

DRA|

* Matrix
* OMEMO
* Cryptocat
* ChatSecure
* Proteus
* Session
* Signal Protocol
* Facebook Messenger
* Google Allo
* Google Messages
* Signal
* TextSecure
* WhatsApp
* SimpleX

Disk encryption
(Comparison)|

* BestCrypt
* BitLocker
* CrossCrypt
* Cryptoloop
* dm-crypt
* DriveSentry
* E4M
* eCryptfs
* FileVault
* FreeOTFE
* GBDE
* geli
* LUKS
* PGPDisk
* Private Disk
* Scramdisk
* Sentry 2020
* TrueCrypt
* History
* VeraCrypt

Anonymity|

* GNUnet
* I2P
* Java Anon Proxy
* Tor
* Vidalia
* RetroShare
* Ricochet
* Wickr

File systems (List)|

* EncFS
* EFS
* eCryptfs
* LUKS
* PEFS
* Rubberhose
* StegFS
* Tahoe-LAFS

Security-focused
operating system|

* Tails
* Qubes

Service providers|

* Freenet
* Tresorit
* Wuala
* NordLocker

Educational|

* CrypTool

Anti–computer forensics|

* USBKill
* BusKill

Related topics|

* Outline of cryptography
* Timeline of cryptography
* Hash functions
* Cryptographic hash function
* List of hash functions
* Homomorphic encryption
* End-to-end encryption
* S/MIME

* Category
* Commons

* v
* t
* e

Content aggregators

Client
software|

| Standalone|

* Akregator
* BlogBridge
* Feedreader
* Flipboard
* Genieo
* Google Currents
* Google News
* Liferea
* NetNewsWire
* Newsbeuter
* NewsFire
* QuiteRSS
* RSS Bandit
* RSS Guard
* RSSOwl
* Seesmic
* WebFetch

|

Web browsers|

* AOL Explorer
* Avant Browser
* Basilisk
* Camino
* iCab
* Firefox
* Flock
* GNOME Web
* Internet Explorer
* K-Meleon
* Kazehakase
* Maxthon
* Microsoft Edge
* Netscape Browser
* Netscape Navigator 9
* OmniWeb
* Opera
* Pale Moon
* Safari
* SeaMonkey
* Shiira
* Sleipnir
* Tencent Traveler
* Vivaldi
* Waterfox

Email clients|

* Apple Mail
* Claws Mail
* Gnus
* HCL Domino
* Microsoft Outlook
* Mozilla Thunderbird
* Netscape Messenger 9
* Opera Mail
* Pegasus Mail
* The Bat!
* Windows Live Mail
* Zimbra

Plugins|

* Cooliris
* Sage

Web apps or
mobile apps|

* Bloglines
* CommaFeed
* Daylife
* Digg Reader
* Drupal
* Feedbin
* Feedly
* FriendFeed
* Google News
* Google Reader
* iGoogle
* dotCMS
* Imooty.eu
* Inoreader
* LinkedIn Pulse
* Magnolia
* My Yahoo!
* News360
* NewsBlur
* Newsknowledge
* Netvibes
* Pageflakes
* Planet
* Rojo.com
* Prismatic
* Spokeo
* The Old Reader
* Tiny Tiny RSS
* TweetDeck
* WebGUI
* Windows Live Personalized Experience
* winnowTag

Media
aggregators|

| Podcast client|

* Adobe Media Player
* Akregator
* Amarok
* Flock
* iTunes
* Juice
* MediaMonkey
* Miro
* Rhythmbox
* Songbird
* Winamp
* Zune

|

RSS + BitTorrent|

* BitLord
* BitTorrent 6
* Deluge
* Miro
* Opera Mail
* qBittorrent
* Tribler
* μTorrent
* Vuze

Related
articles|

* Comparison of feed aggregators
* History of media aggregation
* RSS enclosure

Italics indicate discontinued software.
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