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The following tables compare general and technical information between a number of e-mail client programs. Please see the individual products articles for further information. This article is not all-inclusive or necessarily up-to-date.

Contents 1 General 2 Release history 3 Operating system support 4 Protocol support 4.1 Authentication support 4.2 SSL and TLS Support 5 Features 5.1 Messages features 5.2 Database, folders and customization 5.3 Templates, scripts and programming languages 6 See also 7 References 8 External links

[edit] General

Basic general information about the clients: creator/company, license/price etc. Clients in purple are no longer in development.

Client	Creator	Cost	Software license
Alpine	University of Washington	Free	Apache License
Balsa	gnome.org	Free	GNU GPL
Citadel	citadel.org	Free	GNU GPL
Claws Mail	the Claws Mail team	Free	GNU GPL
Cone	Courier Mail Server developers	Free	GNU GPL
Correo	Nick Kreeger	Free	GNU GPL
Courier (formerly Calypso)	Micro Computer Systems, Inc., continued by Rose City Software	Free (as of version 3.5)	proprietary software
Elm	Dave D. Taylor, Sydney Weinstein, Bill Pemberton, Michael Elkins, Kari Hurtta	Free	Elm Mail System GPL
Eudora	Qualcomm	Free	Future release, Penelope, will be Free/Open Source based on Mozilla Thunderbird
Eureka Email	Sean O'Connor	Shareware (no time limit), US$20 full version	proprietary software
GNUMail	Ludovic Marcotte and others	Free	GNU GPL
Gnus	Gnus team	Free	GNU GPL
GroupWise	Novell	Included with GroupWise mailbox license	proprietary software
i.Scribe / InScribe	Memecode	Freeware (i.Scribe), US$20 (InScribe)	proprietary software
IBM Lotus Notes	Lotus Software / IBM	US$107, includes 1 yr phone support	proprietary software
KMail	The KMail Team	Free, part of KDE	GNU GPL
Mail	Apple Inc.	Part of Mac OS X	proprietary software
Mailsmith	Bare Bones Software	US$75 incl. SpamSieve	proprietary software
Microsoft Entourage	Microsoft	Part of Microsoft Office for Mac	proprietary software
Microsoft Office Outlook	Microsoft	Part of Microsoft Office, US$109 stand-alone	proprietary software
Mozilla Mail & Newsgroups	Mozilla Foundation	Free, part of Mozilla Application Suite	MPL, MPL/GNU GPL/GNU LGPL tri-license
Mozilla Thunderbird	Mozilla Foundation	Free	MPL, MPL/GNU GPL/GNU LGPL tri-license
Mulberry	Cyrus Daboo (previously Cyrusoft International, Inc./ISAMET	Free (as of version 4.0.5)	Apache License
Mutt	Michael Elkins	Free	GNU GPL
Netscape Messenger	Netscape Communications	Free	?
Netscape Messenger 9	Netscape Communications	Free	MPL, MPL/GNU GPL/GNU LGPL tri-license
nmh / MH	RAND Corporation	Free	BSD
Novell Evolution	Ximian	Free	GNU GPL
Opera Mail	Opera Software	Free, Part of Opera	proprietary software
Outlook Express	Microsoft	Free	proprietary software
Pegasus Mail	David Harris	Donationware	proprietary software
Pine	University of Washington	Free	Pine License
Pocomail	Poco Systems	US$40	Proprietary Software
SeaMonkey Mail & Newsgroups	SeaMonkey Council	Free, part of SeaMonkey	MPL, MPL/GNU GPL/GNU LGPL tri-license
Sylpheed	Hiroyuki Yamamoto	Free	GNU GPL/GNU LGPL
Spicebird	Synovel	Free	MPL, MPL/GNU GPL/GNU LGPL tri-license
The Bat!	RitLabs	US$45	proprietary software
Turnpike	Thus PLC (Demon Internet)	Free for Demon customers, GB£199 inc. VAT otherwise	proprietary software
VM (View Mail)	Kyle Jones (Wonderworks)	Free	GNU GPL
Windows Live Mail	Microsoft	Free	proprietary software
Windows Mail	Microsoft	Part of Windows Vista	proprietary software
YAM	YAM Open Source Team and contributing authors	Free	GNU GPL
Zimbra	Zimbra	Free	MPL on server and ZPL (attribution clause) on client
Client	Creator	Cost	Software license

[edit] Release history

A brief overview of the release history.

This section contains information about computer software currently in development. The content may change as the software development progresses.

Client	First public release		First stable release		Latest stable release
	Date	Version	Date	Version
Alpine	November 2006	0.8	December 2007	1.00	2.00  (2008-08-26; 232 days ago)
Citadel	1987	?	1988	1.00	7.38  (2008-09-13; 214 days ago)
Claws Mail	May 2001	0.4.67	January 2005	1.0.0	3.7.1  (Mar 06, 2009)
Cone	May 2003	0.50	May 2003	0.50	0.77  (2008-08-28; 230 days ago)
Correo	January 9, 2007	.1	?	?	0.3  (2007-12-05; 497 days ago)
Courier	?	?	?	?	3.5  (June 2004)
Elm	?	?	?	?	2.5.8  (August 2005)
Eudora	1988[1]	?	1988[1]	?	7.1 (Windows), 6.2.4 (Mac OS)  (2006-10-11; 917 days ago)
Eureka Email	November 2002	1.0	November 2002	1.0	2.2  (March 2005)
Gnus	1987[2]	?	February 1, 1988[2]	2.0	5.10.10  (2008-04-21; 359 days ago)
GroupWise	?	?	1986	1.0	8.0  (2008-11-17; 149 days ago)
i.Scribe / InScribe	1999	1.00	?	?	1.88  (January 2006)
IBM Lotus Notes	1989	1.0	1989	1.0	8.5  (January 6, 2009)
KMail	October 1998	Alpha	February 1999	1.0.17	1.4.1  (2009-03-04; 42 days ago)
Mail	September 13, 2000	Public Beta	March 24, 2001	1.0	3.5 (930.3)  (2008-12-15; 121 days ago)
Mailsmith	May 8, 1998	1.0	May 8, 1998	1.0	2.1.5  (2005-03-09; 1498 days ago)
Microsoft Entourage	?	?	?	?	12.1.0  (2008-05-14; 336 days ago)
Microsoft Office Outlook	1997	97	1997	97	12.0.4518.1014  (2007-01-30; 806 days ago)
Mozilla Mail & Newsgroups	December 7, 1998	"Preview"	March 19, 1999	M3	discontinued
Mozilla Thunderbird	July 28, 2003	0.1	December 7, 2004	1.0	2.0.0.21  (2009-03-18; 28 days ago)
Mulberry	September 20, 1996	1.0	September 20, 1996	1.0	4.0.8  (2007-02-21; 784 days ago)
Mutt	1995	?	?	?	1.4.2.3  (2007-06-09; 676 days ago)
Netscape Messenger	?	?	?	?	discontinued
Netscape Messenger 9	November 15, 2007	9.0a1	discontinued	discontinued	discontinued
nmh / MH	1979	?	?	?	1.3  (2008-06-01; 318 days ago)
Novell Evolution	11 May 2000	0.0	3 December 2001	1.0	2.26.1  (14 April 2009)
Opera Mail	September 1996	2.1b1	December 1996	2.1	9.64  (2009-03-02; 44 days ago)
Outlook Express	1996	3.0	?	?	6.0 SP2  (August 25, 2004)
Pegasus Mail	1990	?	1990	?	4.41  (2006-07-16; 1004 days ago)
Pine	January 15, 1992	2.00	January 15, 1992	2.00	4.64  (2005-09-28; 1295 days ago)
Pocomail	?	?	?	?	4.5 build 3910  (2007-09-03; 590 days ago)
SeaMonkey Mail & Newsgroups	September 15, 2005	1.0a	January 30, 2006	1.0	1.1.16  (2009-04-08; 7 days ago)
Sylpheed	January 2000	0.1.0	December 2004	1.0.0	2.6.0  (December 19, 2008)
The Bat!	March 1997	1.0 Beta	March 1998	1.00 Build 1310	4.1.11  (2009-01-22; 83 days ago)
Turnpike	?	1.0	?	?	6.06  (2006-05-23; 1058 days ago)
VM (View Mail)	1987?	?	March 2, 1991 (earliest known date)	5.24	8.0.9-544  (2008-02-21; 419 days ago)
Windows Live Mail	?	?	?	?	Build 14.0.8064.0206  (2009-02-12; 62 days ago)
Windows Mail	?	?	?	?	?
YAM	1995	1.0	1995	1.0	2.5  (2007-12-21; 481 days ago)
Zimbra	November, 2005	Beta	March, 2006	3.5	1.0 RC2 (build 1513)  (2009-03-04; 42 days ago)
Client	Date	Version	Date	Version	Latest stable release
	First public release		First stable release

[edit] Operating system support

The operating systems on which the clients can run natively (without emulation).

Client	Microsoft Windows	Mac OS X	Linux	BSD	Unix	FreeDOS, DOS	Other
Alpine	Yes	Yes	Yes	Yes	Yes	No	No
Balsa	No	No	Yes	No	No	No	No
Citadel	Yes	Yes	Yes	Yes	Yes	No	No
Claws Mail	Yes†	Yes	Yes	Yes	Yes	No	No
Cone	No	Yes	Yes	Yes	Yes	No	No
Correo	No	Yes	No	No	No	No	No
Courier	Yes	No	No	No	No	No	No
Elm	No	Yes	Yes	Yes	Yes	No	No
Eudora	Yes	Yes	No	No	No	No	No
Eureka Email	Yes	No	No	No	No	No	No
Gnus	Yes	Yes	Yes	Yes	Yes	Yes	Emacs
GroupWise	Yes	Yes	Yes	Yes	Yes	?	?
i.Scribe / InScribe	Yes	Yes	Yes	No	No	No	No
IBM Lotus Notes	Yes	Yes	Yes	No	No	No	No
KMail	Yes	Yes	Yes	Yes	Yes	No	No
Mail	No	Included	No	No	No	No	No
Mailsmith	No	Yes	No	No	No	No	No
Microsoft Entourage	No	Yes	No	No	No	No	No
Microsoft Office Outlook	Yes	No	No	No	No	No	No
Mozilla Mail & Newsgroups	Terminated (1.7.13)					No	No
Mozilla Thunderbird	Yes	Yes	Yes	Yes	Yes	No	No
Mulberry	Yes	Yes	Yes	Yes	Yes	No	No
Mutt	Yes	Yes	Yes	Yes	Yes	Yes [3]	No
Netscape Messenger	Terminated (4.80)					No	No
Netscape Messenger 9	Terminated (9.0a1)					No	No
nmh / MH	No	Yes	Yes	Yes	Yes	No	No
Novell Evolution	Yes (beta)	Yes	Yes	Yes	Yes	No	No
Opera Mail	Yes	Yes	Yes	Yes	Yes	No	No
Outlook Express	Included (up to XP)	No	No	No	No	No	No
Pegasus Mail	Yes	No	No	No	No	Yes	No
Pine	Yes	Yes	Yes	Yes	Yes	Terminated (3.96) [4]	No
SeaMonkey Mail & Newsgroups	Yes	Yes	Yes	Yes	Yes	No	No
Sylpheed	Yes	Yes	Yes	Yes	Yes	No	No
Spicebird	Yes	planned	Yes	Yes	No	No	No
The Bat!	Yes	No	No	No	No	No	No
Turnpike	Yes	No	No	No	No	No	No
VM (View Mail)	Yes	Yes	Yes	Yes	Yes	Yes	Emacs
Windows Live Mail	Yes	No	No	No	No	No	No
Windows Mail	Included (Vista)	No	No	No	No	No	No
YAM	No	No	No	No	No	No	AmigaOS
Zimbra	Yes	Yes	Yes	Yes	Yes	No	No
Client	Microsoft Windows	Mac OS X	Linux	BSD	Unix	FreeDOS, DOS	AmigaOS MorphOS

^  The windows port of Claws-Mail currently lacks SSL support and IMAP support.

[edit] Protocol support

What e-mail and related protocols and standards are supported by each client.

Client	POP3 fetch all messages	POP3 selected by filter	POP3 selected by user	IMAP4	SMTP	NNTP	LDAP v2	LDAP v3	IMSP	ACAP	RSS 0.91 Feeds	RSS 1.0 Feeds	RSS 2.0 Feeds	ATOM Feeds	iCalendar
Alpine	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?	?	?	?	?	?
Citadel	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Claws Mail	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?	No	Yes †	Yes †	Yes †	Yes †
Cone	Yes	No	No †	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No	No	No
Correo	Yes	?	?	Yes	Yes	?	?	?	?	?	?	?	?	?	?
Courier	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	No	No	No	No	No	No	No
Elm	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Eudora	Yes	No	No	Yes	Yes	No	Yes	Yes	No	Yes	No	No	No	No	No
Eureka Email	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Gnus	Yes	Yes	No	Yes	Yes	Yes	Yes †	Yes †	?	?	Yes	Yes	Yes	No	?
GroupWise	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	No	?	?	?	?	Yes
i.Scribe / InScribe	Yes	No	Yes	Yes	Yes	No	Yes †	Yes †	No	No	No	No	No	No	No
IBM Lotus Notes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	No	No	Yes †	Yes	Yes	Yes	Yes
KMail	Yes	No	No	Yes	Yes	No †	Yes	?	?	?	No †	No †	No †	No †	No †
Mail	Yes	No	No	Yes	Yes	No	Yes	?	?	?	Yes	Yes	Yes	Yes	No
Mailsmith	Yes	?	Yes	No	Yes	?	?	?	?	?	No	No	No	No	No
Microsoft Entourage	Yes	?	?	Yes	Yes	Yes	No	Yes	?	?	?	?	?	?	Yes
Microsoft Office Outlook	Yes	No	No	Yes	Yes	No	Yes	?	?	?	Yes †	Yes †	Yes †	Yes †	Yes †
Mozilla Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	Yes	No	No	Yes	Yes	Yes	Partial	?	No	No	Yes	Yes	Yes	Yes	Yes †
Mulberry	Yes	No	No	Yes	Yes	No	Yes	?	Yes	Yes	No	No	No	No	Yes
Mutt	Yes	No (possible with POP3 browser)	No (possible with POP3 browser)	Yes	Yes	No (slrn looks alike)	Partial (resolve real names through NSS)	?	?	?	No	No	No	No	No
Netscape Messenger	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Novell Evolution	Yes	No	No	Yes	Yes	Yes	?	?	?	?	No	No	No	No	Yes
Opera Mail	Yes	No	Yes	Yes	Yes	Yes	No	No	?	?	Yes	Yes	Yes	Yes	No
Outlook Express	Yes	No	No	Yes	Yes	Yes	Yes	?	?	?	No	No	No	No	No
Pegasus Mail	Yes	Yes	Yes	Yes	Yes	Yes †	Yes	?	?	?	Yes †	Yes †	Yes †	?	?
Pine	Yes	No	No	Yes	Yes	Yes	Yes	No	No	No	No	No	No	No	No
SeaMonkey Mail & Newsgroups	Yes	No	No	Yes	Yes	Yes	Partial	?	No	No	Yes	Yes	Yes	Yes	Yes †
Sylpheed	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No	No	No	No
Spicebird	Yes	No	No	Yes	Yes	Yes	Partial	?	No	No	Yes	Yes	Yes	Yes	Yes †
The Bat!	Yes	Yes †	Yes †	Yes	Yes	Yes †	Yes	No	No	No	Yes †	Yes †	Yes †	Yes †	No
Turnpike	Yes	?	?	?	Yes	Yes	?	?	?	?	?	?	?	?	?
VM (View Mail)	Yes	?	?	Yes	Yes	No	Yes †	Yes †	?	?	No	No	No	No	?
Windows Live Mail	Yes	No	No	Yes	Yes	Yes	Yes	?	?	?	Yes	Yes	Yes	Yes	No
Windows Mail	Yes	No	No	Yes	Yes	?	?	?	?	?	?	?	?	?	?
YAM	Yes	Yes	Yes	No	Yes	No	No	No	No	No	No	No	No	No	No
Zimbra	Yes	No	No	Yes	Yes	Yes	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes
Client	POP3 fetch all messages	POP3 selected by filter	POP3 selected by user	IMAP4	SMTP	NNTP	LDAP v2	LDAP v3	IMSP	ACAP	RSS 0.91 Feeds	RSS 1.0 Feeds	RSS 2.0 Feeds	ATOM Feeds	iCalendar

• ^  An Emacs module named EUDC extends Gnus/VM (View Mail) and BBDB to support LDAP.
• ^  KDE supports Newsgroups (NNTP) by the use of KNode
• ^  KDE supports feeds by the use of Akregator
• ^  KDE supports iCal by the use of KOrganizer
• ^  Studio Blog Reader is one RSS reader application for IBM Lotus Notes. IBM Lotus Notes version 8.x introduced a native RSS reader.
• ^  Support of feeds is available in Microsoft Office Outlook 2007.
• ^  Microsoft Outlook support of iCalendar varies by version.
• ^  Selective Download filters can skip/delete messages on POP3 server based on header (sender, recipient, subject, etc) information, this doesn't require to retrieve the full message body from the server.
• ^  Message Dispatcher allows the user to decide which messages should be retrieved, deleted or skipped based on the header information (sender, recipient, subject, etc) displayed to the user.
• ^  iCalendar is supported with an extension.
• ^  RSSyl plugin is required to read RSS and ATOM in Claws Mail.
• ^  vCalendar plugin is required to handle iCalendar in Claws Mail.
• ^  The BAT! requires MyGate plugin installed for handling NNTP.
• ^  The BAT! requires rss2mail or rss2pop3 plugin installed for handling RSS and ATOM.
• ^  i.Scribe / InScribe requires a plugin to handle LDAP.
• ^  Pegasus Mail can convert Newsgroup messages and/or RSS feeds to e-mails through the use of free add-ons.
• ^  Cone has an option to either keep all POP3 mail on the server, or download all messages from the POP3 mailbox.

[edit] Authentication support

Client	Regular		MSN (NTLM) browser login	Compuserve (RPA)	MD5 APOP †	CRAM-HMAC †			DIGEST-MD5	with hardware token PKCS#11	Biometric	SMTP Auth †	SSL/TLS Client Certificate
	LOGIN	PLAIN				MD5	SHA1	RIPEMD
Alpine	Yes	Yes	No	No	No	Yes	No	No	No	No	No	Yes	No
Citadel	?	?	?	?	?	?	?	?	?	?	?	?	?
Claws Mail	Yes	Yes	?	?	Yes	Yes	?	?	Yes	Yes †	?	Yes	Yes
Cone	Yes	Yes	No	No	No	Yes	Yes	No	No	No	No	Yes	Yes
Correo	?	?	?	?	?	?	?	?	?	?	?	?	?
Courier	Yes	Yes	Yes	No	Yes	Yes	Yes	No	Yes	No	No	Yes	Yes
Elm	?	?	?	?	?	?	?	?	?	?	?	?	?
Eudora	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No	Yes	?
Eureka Email	?	?	?	?	?	?	?	?	?	?	?	?	?
Gnus	Yes	Yes	?	?	Yes	Yes	Yes	?	Yes	?	?	Yes	?
GroupWise	?	?	?	?	?	?	?	?	?	?	?	?	?
i.Scribe / InScribe	Yes	Yes	Yes	No	Yes	No	No	No	No	No	No	Yes	No
IBM Lotus Notes	Yes	?	Yes	No	No	No	?	?	?	Yes	No	Yes	?
KMail	Yes	Yes	Yes	No	Yes	Yes	No	No	Yes	No	No	Yes	?
Mail	Yes	Yes	Yes †	No	Yes	Yes †	?	?	?	?	?	Yes	?
Mailsmith	?	?	?	?	?	?	?	?	?	?	?	?	?
Microsoft Entourage	Yes	No	Yes	?	?	Yes	?	?	?	Yes	?	Yes	Yes
Microsoft Office Outlook	Yes	No	Yes	No	No	No	No	No	No	No	No	Yes	No
Mozilla Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	Yes	Yes	Yes	No	Yes	Yes	No	No	No [1]	Yes	No	Yes	Yes
Mulberry	Yes	Yes	Yes	No	No	Yes	No	No	Yes	No	No	Yes	Yes
Mutt	Yes	Yes	Yes	?	Yes	Yes	No	No	Yes	No	No	1.5.15	Yes
Netscape Messenger	?	?	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	?	?	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	?	?	?	?	?	?	?	?	?	?	?	?	?
Novell Evolution	Yes	Yes	Yes	No	Yes	Yes	No	No	Yes	No	No	Yes	No
Opera Mail	Yes	Yes	No	No	Yes	Yes	No	No	No	No	No	Yes	Yes
Outlook Express	Yes	No	Yes	No	No	No	No	No	No	No	No	Yes	No
Pegasus Mail	Yes	?	No	No	Yes	No	No	No	No	No	No	Yes	Yes
Pine	Yes	Yes	No	No	No	Yes	No	No	No	No	No	Yes	No
Pocomail	?	?	?	?	?	?	?	?	?	?	?	?	?
SeaMonkey Mail & Newsgroups	Yes	Yes	Yes	No	Yes	Yes	No	No	No [2]	Yes	No	Yes	Yes
Sylpheed	Yes	Yes	No	No	Yes	Yes	No	No	No	No	No	Yes	No
The Bat!	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes	No
Turnpike	?	?	?	?	?	?	?	?	?	?	?	?	?
VM (View Mail)	Yes	Yes	?	?	Yes	Yes	Yes	?	No	?	?	Yes	?
Windows Live Mail	Yes	No	Yes	No	Yes	No	No	No	No	No	No	No	No
Windows Mail	?	?	?	?	?	?	?	?	?	?	?	?	?
YAM	Yes	Yes	?	?	Yes	?	?	?	?	?	?	?	AmiSSL
Zimbra	Yes	Yes	?	?	Yes	Yes	?	?	?	Yes	?	?	?
Client	Regular		MSN (NTLM) browser login	Compuserve (RPA)	MD5 APOP †	CRAM-HMAC †			DIGEST-MD5	with hardware token PKCS#11	Biometric	SMTP Auth †	SSL/TLS Client Certificate
	LOGIN	PLAIN				MD5	SHA1	RIPEMD

• ^  Description: RFC 2554
• ^  Description: RFC 1734
• ^  Description: RFC 2195
• ^ 10.1.3 Apple adds SSL and CRAM-MD5 support to Mail
• ^ Apple supports NTLM v2 in Mail as of 10.4 release
• ^  Claws Mail requires S/MIME plugin installed.

[edit] SSL and TLS Support

Client	Secure POP3		Secure IMAP4		Secure SMTP		Secure NNTP		Secure LDAP		OCSP †	CRL †
	SSL	TLS †	SSL	TLS †	SSL	TLS †	SSL	TLS	SSL	TLS
Alpine	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	?	?
Citadel	?	?	?	?	?	?	?	?	?	?	?	?
Claws Mail	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?
Cone	Yes	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	No	No
Correo	?	?	?	?	?	?	?	?	?	?	?	?
Courier	No	No	No	No	No	No	No	No	No	No	No	No
Elm	?	?	?	?	?	?	?	?	?	?	?	?
Eudora	Yes	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	?	?
Eureka Email	?	?	?	?	?	?	?	?	?	?	?	?
Gnus	?	?	Yes	Yes	?	?	?	?	?	?	?	?
GroupWise	?	?	?	?	?	?	?	?	?	?	?	?
i.Scribe / InScribe	Yes	Yes	Yes	No	Yes	Yes	No	No	No	No	No	No
IBM Lotus Notes	Yes	?	Yes	?	Yes	Yes	Yes	?	Yes	?	?	Yes
KMail	Yes	Yes	Yes	Yes	Yes	Yes	No	No	?	?	?	?
Mail	Yes	?	Yes	Yes	Yes	?	No	No	Yes	?	?	?
Mailsmith	?	?	?	?	?	?	?	?	?	?	?	?
Microsoft Entourage	Yes	?	Yes	?	Yes	?	Yes	?	Yes	?	?	?
Microsoft Office Outlook	Yes	No	Yes	Yes	Yes	Yes	?	?	?	?	?	?
Mozilla Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Mulberry	Yes	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	?	?
Mutt	Yes	Yes	Yes	Yes	1.5.15	1.5.15	?	?	?	?	?	?
Netscape Messenger	?	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	?	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	?	?	?	?	?	?	?	?	?	?	?	?
Novell Evolution	Yes	Yes	Yes	Yes	Yes	Yes	No	No	?	?	?	?
Opera Mail	Yes	Partial †	Yes	Partial †	Yes	Partial †	Yes	No	No	No	?	?
Outlook Express	Yes	No	Yes	No	Yes	No	?	?	?	?	?	?
Pegasus Mail	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes	?	?	?
Pine	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No	?	?
Pocomail	?	?	?	?	?	?	?	?	?	?	?	?
SeaMonkey Mail & Newsgroups	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Sylpheed	?	?	?	?	?	?	?	?	?	?	?	?
Spicebird	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
The Bat!	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No	No
Turnpike	?	?	?	?	?	?	?	?	?	?	?	?
VM (View Mail)	Yes	Yes	Yes	Yes	?	?	No	No	?	?	?	?
Windows Live Mail	Yes	No	Yes	No	Yes	No	?	?	?	?	?	?
Windows Mail	Yes	?	Yes	?	Yes	?	?	?	?	?	?	?
YAM	?	?	?	?	?	?	?	?	?	?	?	?
Zimbra	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?
Client	Secure POP3		Secure IMAP4		Secure SMTP		Secure NNTP		Secure LDAP		OCSP †	CRL †
	SSL	TLS †	SSL	TLS †	SSL	TLS †	SSL	TLS	SSL	TLS

• ^  Description: RFC 2487
• ^  Description: RFC 2595
• ^  Opera Mail does not support STARTTLS command on special ports, like 995 for pop3 connection
• ^  Online Certificate Status Protocol - Description: RFC 2560
• ^  Certificate Revocation List - Description: RFC 3280

[edit] Features

This article may require cleanup to meet Wikipedia's quality standards. Please improve this article if you can. (March 2009)

Information on what features each of the clients support.

Note that for all of these clients, the concept of "HTML support" does not mean that they can process the full range of HTML that a web browser can handle. Almost all email readers limit HTML features, either for security reasons, or because of the nature of the interface. CSS and Javascript can be especially problematic. A number of articles describe these limitations per-email-client; see 1, 2, 3, and 4

Client	HTML e-mail	UTF-8 support	Image blocking	Junk filtering		Phishing filtering	Thread view	Conver- sation view	PGP support		S/MIME support
				local	server- side				inline	PGP/MIME or OpenPGP	protocol	OCSP	CRL	certificates on tokens, smartcards support
Alpine	Yes	Yes	Yes	?	?	?	Yes	?	Yes	?	Yes	?	?	?
Citadel	Yes	Yes	No	Yes †	?	?	No	?	?	?	?	?	?
Claws Mail	Read-only	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	Yes	?	Yes	Yes
Cone	Yes	Yes	Yes	Yes	No	No	Yes	?	No	Yes	No	No	No	No
Correo	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Courier	Yes	No	No	Yes	Yes	?	No	?	?	?	?	?	?	?
Elm	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Eudora	Yes	No	Yes	Pro only	Pro only	?	Yes	No	Yes †	Yes †	Yes	?	?	?
Eureka Email	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Evolution	?	?	?	?	?	?	?	No	?	?	?	?	?	?
Gnus	Yes	Yes	Yes	Yes	Yes	?	Yes	?	Yes	Yes	Yes	?	?	Yes
GroupWise	?	?	?	?	?	?	?	?	?	?	?	?	?	?
i.Scribe / InScribe	Read-only	Yes	Yes	Yes	No	?	Yes	?	Yes	No	No	No	No	No
IBM Lotus Notes	Yes	Yes	Yes	Yes	Yes	?	Yes †	?	Yes	Yes (4.1.2+)	Yes	Yes, [3]	Yes	Yes
KMail	Yes	Yes	Yes	Yes	?	?	Yes	No	Yes (with GPG)	Yes (1.5+, with GPGME)	Yes	?	?	?
Mail	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes †	Yes †	Yes	Yes	?	?
Mailsmith	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Microsoft Entourage	Yes	Yes	Yes	Yes	Yes	Yes	?	?	?	Yes	Yes	?	?	Yes
Microsoft Office Outlook	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	No	No	Yes	?	?	?
Mozilla Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	Yes	Yes	Yes	Yes	No	Yes †	Yes †	No	Yes †	Yes	Yes	Yes	?	Yes
Mulberry	Yes	Yes	Yes	No	Yes	?	Yes	?	Yes †	Yes †	Yes †	?	?	?
Mutt	Read-only	Yes	Yes (no support for images)	Yes	?	?	Yes	?	Yes	Yes	Yes	?	Yes (with GPGME)	?
Netscape Messenger	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	?	?	?	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Novell Evolution	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes	Yes	Yes	?	?	?
Opera Mail	Read-only †	Yes	Yes	Yes	?	Yes	Yes	?	No	No	No	?	?	?
Outlook Express	Yes	Yes	Yes	No	?	?	Yes	?	Yes †	No †	Yes	?	?	?
Pegasus Mail	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes (sending is broken)	?	No	No	No
Pine	Read-only	Yes	Yes	No	?	?	Yes	?	Yes (with Pine Privacy Guard)	No	Yes	?	?	?
Pocomail	?	?	?	?	?	?	?	?	?	?	?	?	?	?
SeaMonkey Mail & Newsgroups	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes †	Yes †	Yes	Yes	?	Yes
Sylpheed	No †	Yes	Yes	Yes	?	?	Yes	?	Yes	Yes	?	?	?	?
Spicebird	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	Yes
The Bat!	Yes	Yes	Yes †	Yes	Yes	?	Yes	?	Yes	Yes	Yes	Partial †	Partial †	Yes †
Turnpike	?	?	?	?	?	?	?	?	?	?	?	?	?	?
VM (View Mail)	Yes	Yes	Yes	Yes	Yes	No	Yes	?	Yes	Yes	No	No	No	No
Windows Live Mail	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	?	Yes	?	?	?
Windows Mail	Yes	?	?	Yes	?	?	?	?	?	?	?	?	?	?
YAM	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Zimbra	Yes	Yes	Yes	Yes	Yes	Yes (depends on antivirus)	Yes	?	?	Yes	?	?	?
Client	HTML e-mail	UTF-8 support	Image blocking	Junk filtering		Phishing filtering	Thread view	Conver- sation view	PGP support		S/MIME support
				local	server- side				inline	PGP/MIME or OpenPGP	protocol	OCSP	CRL	certificates on tokens, smartcards support

• ^ Mozilla Thunderbird adds this feature in Thunderbird 1.5.0.4
• ^  Opera will add a HTML editor for writing HTML-mails.
• ^  First release 6.0 (September 2003), enhancements introduced in release 7.0 (August 2005)
• ^  PGP/GPG and S/MIME support require a free (included) plugin.
• ^  Sylpheed has some limited ability to show HTML email. It can show the plain text that's left after stripping away all the HTML tags. Sylpheed has no ability to compose HTML.
• ^  The Bat is not able to display inline images.
• ^  The Bat! supports two modes of S/MIME: Internal Implementation and via Microsoft Crypto API^[5]. CRLs and OCSP are only supported in the latter mode.
• ^  The Bat! supports two modes of S/MIME: Internal Implementation and via Microsoft Crypto API. Internal implementation only supports Aladdin eToken Pro or Rainbow iKey1000^[6] tokens and can import certificates (from PKCS#12/PFX format) which were created outside The Bat!. CryptoAPI supports any kind of tokens and smart cards which have a corresponding Cryptographic Service Provider installed.
• ^  Citadel plugs Mail into SpamAssassin
• ^  Eudora requires a plugin to handle PGP.
• ^  Mail requires GPGMail-plugin.
• ^  Using PGP in Thunderbird requires Enigmail.
• ^  Using PGP in Outlook Express requires a plugin.
• ^  Outlook Express does not display PGP/MIME signed messages.

[edit] Messages features

Client	Label Messages				Spell Checking	Signatures	Native images preview
	with Colors	with flag	antidelete	add note			jpeg	gif	bmp	png	others
Alpine	Yes	Yes	?	?	Yes	Yes	?	?	?	?	?
Citadel	?	?	?	?	?	?	?	?	?	?	?
Claws Mail	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	?
Cone	Yes	Yes	Yes	No	Yes	No	No	No	No	No	No
Correo	?	?	?	?	?	?	?	?	?	?	?
Courier	Yes	Yes	No	No	Yes	Yes	No	No	No	No	No
Elm	?	?	?	?	?	?	?	?	?	?	?
Eudora	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	?
Eureka Email	?	?	?	?	?	?	?	?	?	?	?
Gnus	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	XPM
GroupWise	?	?	?	?	?	?	?	?	?	?	?
i.Scribe / InScribe	Yes	No	No	Yes	Yes †	Yes	Yes †	Yes	Yes	Yes †	ICO, TIFF
IBM Lotus Notes	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes	No	CGM, Lotus PIC, PCX, TIFF
KMail	No	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	?
Mail	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	any QuickTime supported format
Mailsmith	?	?	?	?	?	?	?	?	?	?	?
Microsoft Entourage	Yes	Yes	?	Yes†	Yes	Yes	Yes	Yes	?	Yes	PDF
Microsoft Office Outlook	Yes	Yes	No	Yes	Yes	Yes	?	?	?	?	?
Mozilla Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes	Yes	ICO
Mulberry	?	Yes	?	?	Yes	Yes	No	No	No	No	No
Mutt	Yes	Yes	No	No	Yes	Yes	No	No	No	No	No
Netscape Messenger	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	?	?	?	?	?	?	?	?	?	?	?
Novell Evolution	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes	Yes	?
Opera Mail	No	Yes	No	No	Yes †	Yes	Yes	Yes	Yes	Yes	APNG, ICO, SVG, WBMP, XBM
Outlook Express	No	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	ICO, art
Pegasus Mail	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?
Pine	Yes	Yes	?	?	Yes †	Yes	No	No	No	No	No
Pocomail	?	?	?	?	?	?	?	?	?	?	?
SeaMonkey Mail & Newsgroups	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	?
Sylpheed	Yes	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes	?
The Bat!	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	ICO, emf
Turnpike	?	?	?	?	?	?	?	?	?	?	?
VM (View Mail)	?	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?
Windows Live Mail	No	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	?
Windows Mail	?	?	?	?	?	?	?	?	?	?	?
YAM	?	?	?	?	?	?	?	?	?	?	?
Zimbra	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?
Client	Label Messages				Spell Checking	Signatures	Native images preview
	with Colors	with flag	antidelete	add note			jpeg	gif	bmp	png	others

• ^  Opera supports full integration with GNU Aspell, which is its requirement for spell checking.
• ^  Pine supports full integration with GNU Aspell or other external speller, which is its requirement for spell checking.
• ^  i.Scribe / InScribe supports full integration with GNU Aspell, which is its requirement for spell checking.
• ^  i.Scribe / InScribe requires libjpeg.
• ^  i.Scribe / InScribe requires libpng.
• ^  Entourage can link a message to a note.

[edit] Database, folders and customization

Client	Message file format	Encrypted database	Virtual folders	Scheduled backup	Ticker notification	Customizable interface	Customizable keybindings	Fragmented messages †	Database search with regular expressions support	Indexed search	Search folders †	IMAP search
Alpine	mbox, mbx, mix, maildir (with patches), MMDF, tenex, mtx, MH, mx, news, phile	?	Yes	Partial	?	Yes	No	?	No	Yes	Yes	Yes
Citadel	?	?	?	?	?	?	?	?	?	?	?	?
Claws Mail	MH, mbox	No	No	No	Yes	Yes	Yes	?	?	?	Yes	Yes
Cone	mbox, maildir	No	No	No	No	Yes (colors)	No	No	No	No	Yes	Yes
Correo	?	?	?	?	?	?	?	?	?	?	?	?
Courier	Proprietary	Yes (weak)	Yes	Yes	?	Yes (layout)	No	?	No	No	Yes	No
Elm	?	?	?	?	?	?	?	?	?	?	?	?
Eudora	mbox	No	Yes	No	No	Yes	Yes	Yes	Yes[specify]	Yes	Yes	Yes
Eureka Email	?	?	?	?	?	?	?	?	?	?	?	?
Gnus	babyl, maildir, mbox, mmdf, news, rnews, SOUP, outlook, oe-dbx	No	Yes	No	No	Yes	Yes	Yes	Yes	No	Yes	Yes
GroupWise	?	?	?	?	?	?	?	?	?	?	?	?
i.Scribe / InScribe	Mail2 File	No	No	No	No	Yes	No	No	No	No	No	No
IBM Lotus Notes	Proprietary	Yes [4]	Yes	Yes	Yes	Yes	Yes	Yes †	No	Yes	Yes	?
KMail	mbox, maildir	No	Yes	No	Yes	Yes	Yes	No	Yes	?	Yes	Yes
Mail	Proprietary	?	Yes	?	?	?	?	?	?	Yes †	Yes †	?
Mailsmith	?	?	?	?	?	?	?	?	?	?	?	?
Microsoft Entourage	Proprietary	?	Yes	Partial †	?	Partial	No	No	Partial †	Yes	Yes	Yes
Microsoft Office Outlook	Proprietary	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes †	Yes	?
Mozilla Mail & Newsgroups	mbox	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	mbox	?	Yes	?	Yes	Yes †	?	No	?	No	Yes	Yes
Mulberry	mbox †	Partial †	Partial †	Partial †	?	Yes	?	?	Yes[specify]	Partial †	No	Yes
Mutt	mbox, MMDF, MH, maildir	Yes (with compressed folders patch [5])	? (has limit command)	No	?	Yes	Yes	?	Yes	? (has header cache)	No (easily integrated with mairix)	Yes
Netscape Messenger	mbox	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	mbox	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	MH	No	Yes	No	No	Yes	No	?	Yes	Yes	Yes	No
Novell Evolution	maildir, mbox, MH	No	Yes	?	No	Partial	Yes †	Yes	Yes	Yes	Yes	Yes
Opera Mail	maildir (9.20 and Above), mbox (9.10 and Below)	No	Yes (all folders are virtual)	No	Yes	Yes	Yes	No	?	Yes	Yes	?
Outlook Express	Proprietary	No	No	No	No	No	No	Yes	?	No	?	?
Pegasus Mail	Proprietary	No	Yes	No	?	Yes	?	?	Yes	?	Yes	Yes
Pine	mbox, mbx, mix, maildir (with patches), MMDF, tenex, mtx, MH, mx, news, phile	?	?	?	?	?	?	?	?	?	?	?
Pocomail	?	?	?	?	?	?	?	?	?	?	?	?
SeaMonkey Mail & Newsgroups	mbox	?	?	?	?	?	?	?	?	?	?	Yes
Sylpheed	MH	No	No	No	Yes	Yes	Yes	No	No †	No †	No	?
The Bat!	Proprietary	Yes (RC2 128 bit) (with Pro and Voyager version) †	Yes	Yes	Yes	Yes	Yes	Yes	Yes (PCRE 6.2)	No	Yes	Yes
Turnpike	Proprietary	Yes	Yes	?	?	?	?	Yes	?	?	Yes	?
VM (View Mail)	babyl, mbox, mmdf	No	Yes	No	No	Yes	Yes	Yes	Yes	No	Yes	No
Windows Live Mail	?	No	No	No	No	Yes	No	Yes	No	Yes	Yes	?
Windows Mail	?	?	?	?	?	?	?	?	?	?	?	?
YAM	?	?	?	?	?	?	?	?	?	?	?	?
Zimbra	File system	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Client	Message file format	Encrypted database	Virtual folders	Scheduled backup	Ticker notification	Customized interface	Customizable keybindings	Fragmented messages †	Database search with regular expressions support	Indexed search	Search folders †	IMAP search

• ^  Fragmented messages are called truncated document in Lotus Notes.
• ^  with Spotlight Mac OS X v. 10.4
• ^  Search folders is called Smart Folders in Mail on Mac OS X v. 10.4.
• ^  Mulberry is a dedicated IMAP client; If the IMAP server has these abilities, Mulberry can use them.
• ^  This is for Mulberry's 'offline browsing' capability, which is turned off by default. In the default configuration no local copy of the mail is created.
• ^  Search Folders are virtual folders that contain views of all e-mail items matching specific search criteria. Search Folders display the results of previously defined search queries.
• ^  Editable keybindings is part of GNOME, provided "Editable menu accelerators" is enabled in GNOME's "Menus & Toolbars" control applet.
• ^  Fragmented messages makes possible, for example, to send a large audio message as several partial messages, and still have it appear to the recipient as a simple audio message rather than as an encapsulated message containing an audio message. RFC 2046
• ^  Because MH stores each letter in a separate file, it is trivially easy to (externally) search them with grep. This ease is shattered when non-raw encodings are used, such as base64.
• ^  The Bat! Pro support two methods access to program when database is encrypted: password authorization and token authorization; Voyager support only password authorization and encrypted database is default and only available storage method.
• ^  Thunderbird's interface can be user customized via the use of themes (which can reposition and skin controls)
• ^  supported since Office 2007.
• ^  when best encryption is used, .pst file cannot be read by a hex editor.
• ^  With Entourage 2008, you can use AppleScript and various internal/external scheduling mechanisms to create timed backups of Entourage Data.
• ^  With Entourage 2008 and later versions of 2004, you can use the Spotlight data to search what's in the E'rage database via regular expression in the file system in Terminal or via Spotlight's ...interesting...version of "regular expressions".

[edit] Templates, scripts and programming languages

Client	Message templates						Message templates individual for	Support in message templates scripts, programming languages
	new	reply	forward	read confirmation	save	print		JavaScript	VBScript	PHP Scripts	Python	Regular expressions	Java	Other (specify)
Alpine	Yes	Yes	Yes	?	?	?	any	No	No	No	No	?	No	?
Citadel	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Claws Mail	Yes	Yes	Yes	Yes	Yes	Yes	account folder	No	No	No	No	?	?	?
Cone	Yes	No	No	No	No	No	?	No	No	No	No	No	No	No
Correo	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Courier	Yes	Yes	Yes	No	Yes	Yes	?	No	No	No	No	No	No	No
Elm	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Eudora	Yes	Yes	Yes	Yes	?	?	?	No	No	No	No	Yes	No	No
Eureka Email	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Gnus	Yes	Yes	Yes	Yes	Yes	Yes	?	No	No	No	No	Yes	No	elisp
GroupWise	?	?	?	?	?	?	?	?	?	?	?	?	?	?
i.Scribe / InScribe	Yes	Yes	Yes	No	No	No	any	No	No	No	No	No	No	Internal macros (similar to JavaScript)
IBM Lotus Notes	Yes	Yes	Yes	Yes	?	?	?	Yes	No	No	No	Yes [6]	Yes	LotusScript, Formula language
KMail	Yes	Yes	Yes	No	No	No	none	?	No	No	No	?	?	?
Mail	Yes Mac OS 10.5 (Leopard)	No	No	No	?	?	?	No	No	No	No	No	?	AppleScript, Automator
Mailsmith	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Microsoft Entourage	Yes	Yes	Yes	Yes	?	?	?	?	?	?	?	?	?	AppleScript,Automator
Microsoft Office Outlook	Yes	Yes	Yes	Yes	?	?	?	?	?	?	?	?	?	?
Mozilla Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Mozilla Thunderbird	Yes	Yes†	Yes†	Yes	Yes	Yes	profile	Yes	?	?	?	?	?	?
Mulberry	Yes	Yes	Yes	Yes	?	?	?	No	No	No	No	?	?	?
Mutt	Yes	Yes	Yes	No	?	?	any	No	No	No	No	Yes	?	Internal macros
Netscape Messenger	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Netscape Messenger 9	?	?	?	?	?	?	?	?	?	?	?	?	?	?
nmh / MH	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Novell Evolution	Yes	Yes	Yes	Yes	?	?	?	?	?	?	?	?	?	?
Opera Mail	Yes	Yes	No	No	No	No	none	No	No	No	No	No	No	No
Outlook Express	Yes	Yes	?	Yes	?	?	?	Yes	Yes	?	?	?	?	?
Pegasus Mail	Yes	Yes	Yes	Yes	?	?	?	?	?	?	?	?	?	?
Pine	Yes	Yes	Yes	?	?	?	any	?	No	No	?	?	No	?
Pocomail	?	?	?	?	?	?	?	?	?	?	?	?	?	?
SeaMonkey Mail & Newsgroups	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Sylpheed	Yes	Yes	Yes	?	?	?	?	No	No	No	No	No	?	?
The Bat!	Yes	Yes	Yes	Yes	Yes	Yes	account folder address book group contact	Yes †	Yes †	Yes †	Yes †	Yes	PCRE 6.2	Internal and plugins macros
Turnpike	?	?	?	?	?	?	?	?	?	?	?	?	?	?
VM (View Mail)	?	?	?	Yes	Yes	Yes	?	No	No	No	No	Yes	No	elisp
Windows Live Mail	Yes†	Yes†	?	Yes†	?	?	?	Yes	Yes	?	?	?	?	?
Windows Mail	?	?	?	?	?	?	?	?	?	?	?	?	?	?
YAM	Yes	Yes	Yes	?	Yes	Yes	?	No	No	No	No	?	?	ARexx
Zimbra	Yes	Yes	Yes	Yes	Yes	Yes	any	No	No	No	No	No	?	?
Client	Message templates						Message templates individual for	Support in message templates scripts, programming languages
	new	reply	forward	read confirmation	save	print		JavaScript	VBScript	PHP Scripts	Python	Regular expressions	Java	Other (specify)

• ^  The Bat! supports JavaScript in message templates with the JavaScript Macro plugin.
• ^  The Bat! supports VBScript in message templates with the XMP plugin.
• ^  The Bat! supports PHP in message templates with the XMP plugin.
• ^  The Bat! supports Python in message templates with the TBPyxie plugin.
• ^  Weak "stationery" system that only accept pages done with Word.
• ^  Thunderbird supports HTML templates with "Stationery" add-on.

[edit] See also

• Unicode and e-mail
• List of personal information managers
• Comparison of layout engines
• Webmail
• Comparision of feed aggregators

[edit] References

[edit] External links

• UAlbany ITS: Email Services - Email Choices: Mail Client Comparison Summary Tables
• E-mail client comparison
• T&B : Email : Clients (of historical interest--last updated in 1999)
• Remail - research by The Collaborative User Experience group at IBM

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