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В следующих таблицах сравниваются общие и технические характеристики ряда известных почтовых клиентских программ.

Общие [ править ]

Основная общая информация о клиентах: создатель / компания, операционная система, лицензия и интерфейс. Клиенты, указанные на светло-фиолетовом фоне, больше не находятся в активной разработке.

КлиентАвтор / РазработчикОперационная системаЛицензия на программное обеспечениеПользовательский интерфейс
АльпийскийВашингтонский университетКроссплатформенностьЛицензия Apache 2.0TUI
Apple MailяблокоmacOS , iOS , watchOSПроприетарныйGUI ( какао )
БальзаСтюарт ПарментерLinuxСтандартная общественная лицензия GNUГрафический интерфейс ( GTK 3)
Бекки! Интернет-почтаRimartsОкнаПроприетарныйГрафический интерфейс
BlitzMailДартмутский колледжЛицензии BSDГрафический интерфейс
Цитадельcitadel.orgUnix-подобныйСтандартная общественная лицензия GNUЭлектронная почта
Кольчуга Когтейкоманда Claws MailКроссплатформенностьСтандартная общественная лицензия GNUГрафический интерфейс ( GTK 2)
КонусРазработчики Courier Mail ServerUnix-подобныйСтандартная общественная лицензия GNUTUI
Курьер (ранее Калипсо)Micro Computer Systems, Inc., продолжение Rose City SoftwareОкнаПроприетарныйГрафический интерфейс
ВязДэйв Тейлор, Сидней Вайнштейн, Билл Пембертон, Майкл Элкинс, Кари ХурттаUnix-подобныйBSD-подобный [1]TUI
eM клиентeM Client Inc.Windows , macOSПроприетарныйГрафический интерфейс
EmailTrayАгентство Интернет-продвижения SAWindows , AndroidПроприетарныйГрафический интерфейс
Eudora OSEQualcommWindows, macOSОткрытый источникГрафический интерфейс
ЭволюцияПроект GNOMEUnix-подобныйСтандартная общественная лицензия GNUГрафический интерфейс ( GTK )
Первый классОткрытый текстПроприетарныйГрафический интерфейс
Агент ФортеМарк СиделлОкнаПроприетарныйГрафический интерфейс
GearyФонд ЙорбаUnix-подобныйGNU LGPL v2.1Графический интерфейс ( GTK )
GNUMailЛюдовик Маркотт и другиеUnix-подобный, macOSСтандартная общественная лицензия GNUГрафический интерфейс
GnusКоманда GNUSКроссплатформенностьСтандартная общественная лицензия GNUTUI и GUI
GroupWiseMicro Focus (ранее Novell )КроссплатформенностьПроприетарныйГрафический интерфейс
ХириХириКроссплатформенностьПроприетарныйГрафический интерфейс
i.Scribe, InScribeМем-кодWindows, macOS, LinuxПроприетарныйГрафический интерфейс
HCL Notes (ранее IBM Notes и IBM Lotus Notes)HCL Technologies (ранее IBM и Lotus Software ), HCL TechnologiesWindows, macOS, LinuxПроприетарныйGUI (Notes), Интернет (Verse, iNotes) и мобильный (Traveler)
IMPООО "Орда"КроссплатформенностьСтандартная общественная лицензия GNUЭлектронная почта
K-9 MailВыгул собак K-9: cketti, et al.AndroidЛицензия Apache 2.0Графический интерфейс
KMailKDEКроссплатформенностьСтандартная общественная лицензия GNUГрафический интерфейс ( Qt )
Почта (Windows)MicrosoftОкнаПроприетарныйГрафический интерфейс
MailbirdMailbirdОкнаПроприетарныйГрафический интерфейс
MailpileMailpileLinux, Windows, macOSAffero General Public License и Apache License 2.0Электронная почта
mailx?Unix-подобныйЛицензии BSDTUI
Microsoft EntourageMicrosoftmacOSПроприетарныйГрафический интерфейс
Microsoft OutlookMicrosoftWindows, macOSПроприетарныйГрафический интерфейс
Почта Mozilla и группы новостейФонд MozillaОбщественная лицензия MozillaГрафический интерфейс ( XUL )
Mozilla ThunderbirdФонд MozillaКроссплатформенностьОбщественная лицензия MozillaГрафический интерфейс ( XUL )
ШелковицаСайрус Дабу (ранее Cyrusoft International, Inc./ISAMET)КроссплатформенностьЛицензия Apache 2.0Графический интерфейс
МаттМайкл ЭлкинсКроссплатформенностьСтандартная общественная лицензия GNUTUI ( ncurses )
Netscape MessengerNetscape Communications?Графический интерфейс
Netscape Messenger 9Netscape CommunicationsОбщественная лицензия MozillaГрафический интерфейс
Nylas MailNylasmacOS, Linux, WindowsМассачусетский технологический институтГрафический интерфейс
нмч / MHRAND CorporationUnix-подобныйЛицензии BSDCLI
Opera MailПрограммное обеспечение OperaКроссплатформенностьПроприетарныйГрафический интерфейс
Outlook ExpressMicrosoftОкнаПроприетарныйГрафический интерфейс
Почта ПегасаДэвид ХаррисОкнаПроприетарныйГрафический интерфейс
соснаВашингтонский университетКроссплатформенностьБесплатное ПО [2]TUI
PocomailPoco SystemsОкнаПроприетарныйГрафический интерфейс
RoundCubeКоманда RoundCubeКроссплатформенностьСтандартная общественная лицензия GNUЭлектронная почта
Почта и группы новостей SeaMonkeyСовет SeaMonkeyКроссплатформенностьОбщественная лицензия MozillaГрафический интерфейс ( XUL )
ИскраReaddlemacOSПроприетарныйГрафический интерфейс
Пряная птицаSynovelWindows, Linux, BSDОбщественная лицензия MozillaГрафический интерфейс ( XUL )
БелкаПочтаКоманда проекта SquirrelMailКроссплатформенностьСтандартная общественная лицензия GNUЭлектронная почта
СильфидХироюки ЯмамотоКроссплатформенностьСтандартная общественная лицензия GNUГрафический интерфейс ( GTK 2)
Летучая мышь!RitLabsОкнаПроприетарныйГрафический интерфейс
TrojitáKDEКроссплатформенностьСтандартная общественная лицензия GNUГрафический интерфейс ( Qt )
МагистральТаким образом, PLC (Demon Internet)ОкнаПроприетарныйГрафический интерфейс
Почта Windows LiveMicrosoftОкнаПроприетарныйГрафический интерфейс
Почта Windows (Vista)MicrosoftОкнаПроприетарныйГрафический интерфейс
СЛАДКИЙ КАРТОФЕЛЬКоманда разработчиков ПО с открытым исходным кодом YAM и участвующие авторыAmigaOSСтандартная общественная лицензия GNUГрафический интерфейс
Zimbra DesktopЗимбраКроссплатформенностьОбщественная лицензия Mozilla для сервера и ZPL для клиентаГрафический интерфейс
КлиентАвтор / РазработчикOperating systemSoftware licenseUser interface

Release history[edit]

A brief digest of the release histories.

ClientFirst public DateFirst public VersionFirst stable DateFirst stable VersionLatest stable release
Alpine2006-110.82007 December1.002017-03-17, 2.24 (October 10, 2020; 7 months ago (2020-10-10)) [±]
Apple Mail?????
Becky! Internet Mail19961??2017-08-29, 2.75.03 (December 25, 2020; 4 months ago (2020-12-25) [3]) [±]
Citadel1987?19881.002017-01-15, 906 (January 15, 2017; 4 years ago (2017-01-15)) [±]
Claws Mail2001-050.4.672005-011.0.02017-08-29, 3.17.6 (July 13, 2020; 9 months ago (2020-07-13)[4]) [±]
Cone2003-050.502003-050.502016-08-03, 1.0 (September 13, 2018; 2 years ago (2018-09-13)) [±]
Courier2004-063.5discontinueddiscontinued2004-06, 3.5 (June 2004) [±]
Elm1986?1987-0322005-08-18, 2.5.8 (August 18, 2005; 15 years ago (2005-08-18)) [±]
eM Client2007-111.02007-111.02020-06-27, 8.2 (March 22, 2021; 49 days ago (2021-03-22)) [±]
EmailTray2010-102.02011-033.112012-07-02, 4.0 (July 2, 2012; 8 years ago (2012-07-02)) [±]
Eudora1988[5]?1988[5]?2006-10-11, 7.1 (Windows), 6.2.4 (Mac OS) (October 11, 2006; 14 years ago (2006-10-11)) [±]
Evolution2000-05-110.02001-12-031.02017-09-13, 40.0[6] (24 March 2021; 47 days ago (2021-03-24)) [±]
Forté Agent????2014-10-20, 8 (October 20, 2014; 6 years ago (2014-10-20)) [±]
Geary20120.120120.12017-10-02, 3.38 (September 12, 2020; 7 months ago (2020-09-12)[7]) [±]
Gnus1987[8]?1988-02-01[8]2.02015-04-06,
GroupWise??19861.02014-04-02, 18.1
(2018; 3 years ago (2018)) [±]
Hiri2014-020.42016-061.02017-06-10, 1.0.11 (June 10, 2017; 3 years ago (2017-06-10)) [±]
i.Scribe / InScribe19991.00??2014-08-04, 2.3.18 (March 30, 2021; 41 days ago (2021-03-30)) [±]
IBM Lotus Notes19891.019891.02013-03-14, 11.0.1 (March 31, 2020; 13 months ago (2020-03-31)) [±]
IMP??19981.02016-09-06, 6.2.16 (September 6, 2016; 4 years ago (2016-09-06)) [±]
K-9 Mail????2018-09-02
KMail1998-10Alpha1999-021.0.172014-11-11, 4.14.38 (November 7, 2017; 3 years ago (2017-11-07)) [±][9]
Mailbird2013-04-01Public Beta??2018-12-19, 2.5.27 (December 19, 2018; 2 years ago (2018-12-19)) [±]
Mailpile2011-11[10][11][12]2019-09-04 1.0.0rc6 (September 4, 2019; 20 months ago (2019-09-04)[13]) [±]
Microsoft Entourage????2013-03-12, 2008 (12.3.6) (March 12, 2013; 8 years ago (2013-03-12)) [±]
Microsoft Office Outlook1997971997972019-05-09,
Office 3652103 (16.0.13901.20462) / April 23, 2021; 17 days ago (2021-04-23)[14]
One-time purchase2019 (16.0.13328.20356) / September 24, 2018; 2 years ago (2018-09-24)[15]


Mozilla Thunderbird2003-07-280.12004-12-071.02019-03-25,

78.9.1[16] (April 8, 2021; 32 days ago (2021-04-08)) [±]

Mulberry1996-09-201.01996-09-201.02007-02-21, 4.0.8 (February 21, 2007; 14 years ago (2007-02-21)) [±]
Mutt1995???2017-09-02, 2.0.7[17] (May 4, 2021; 6 days ago (2021-05-04)) [±]
Netscape Messenger????2007-08-17, 7.2 (August 17, 2007; 13 years ago (2007-08-17)) [±]
Netscape Messenger 92007-11-159.0a1discontinueddiscontinued2007-11-15
nmh / MH1979???2012-06-11, 1.5 (June 11, 2012; 8 years ago (2012-06-11)) [±]
Opera Mail1996-092.1b11996-122.12016-02-16, 1.0.1044[18] (February 16, 2016; 5 years ago (2016-02-16)) [±]
Outlook Express19963.0??2004-08-25, 6.0 SP3 (May 5, 2008; 13 years ago (2008-05-05)) [±]
Pegasus Mail1990?1990?2018-06-07, 4.73 (7 June 2018; 2 years ago (2018-06-07)[19]) [±]
Pine1992-01-152.001992-01-152.002005-09-28, 4.64 (September 28, 2005; 15 years ago (2005-09-28)) [±]
Pocomail1999???2009-04-06, 4.8 build 4400 (April 6, 2009; 12 years ago (2009-04-06)) [±]
RoundCube20060.1-rc12014-04-071.0.02020-10-09, 1.4.8
SeaMonkey Mail & Newsgroups2005-09-151.0a2006-01-301.02017-07-31, 2.53.7.1 (April 15, 2021; 25 days ago (2021-04-15)[20]) [±]
SquirrelMail1999-120.12001-011.02011-07-12, 1.4.22 (12 July 2011; 9 years ago (2011-07-12)) [±]
Sylpheed2000-010.1.02004-121.0.02017-06-29, 3.7.0 (January 31, 2018; 3 years ago (2018-01-31)) [±]
The Bat!1997-031.0 Beta1998-031.00 Build 13102018-03-23, 9.3.4 (April 23, 2021; 17 days ago (2021-04-23)) [±]
Trojitá2009-080.12012-120.3.902016-06-15, 0.7 (June 15, 2016; 4 years ago (2016-06-15)[21]) [±]
Turnpike1996 (circa)1.01996 (circa)1.02006-05-23, 6.06 (May 23, 2006; 14 years ago (2006-05-23)) [±]
Windows Live Mail2007-11-06122007-11-06122014-11-04, 2012 (v16.4.3528.0331) (November 4, 2014; 6 years ago (2014-11-04)) [±]
Windows Mail????2007-01-01,
YAM19951.019951.02014-04-18, 2.9p1 (April 18, 2014; 7 years ago (2014-04-18)) [±]
Zimbra2005-11Beta2006-033.52014-12-15, 8.6.0[22] (December 15, 2014; 6 years ago (2014-12-15)) [±]

Operating system support[edit]

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

ClientMicrosoft WindowsmacOSLinuxBSDUnixDOSOther
AlpineYesYesYesYesYesNoNo
Apple MailNoYesNoNoNoNoNo
BalsaNoNoYesYesNoNoNo
Becky! Internet MailYesNoNoNoNoNoNo
CitadelNoYesYesYesYesNoNo
Claws MailYesYesYesYesYesNoNo
ConeNoYesYesYesYesNoNo
CourierYesNoNoNoNoNoNo
ElmNoYesYesYesYesNoNo
eM ClientYesYesNoNoNoNoNo
EmailTrayYesNoNoNoNoNoNo
EudoraYesYesNoNoNoNoNo
EvolutionNo [Note 1]NoYesYesYesNoNo
Forté AgentYesNoNoNoNoNoNo
GearyNoNoYesYesYesNoNo
GnusYesYesYesYesYesYesNo
GroupWiseYesYesYesYesNoNoNo
HiriYesYesYesNoYesNoNo
i.Scribe / InScribeYesYesYesNoNoNoNo
IBM Lotus NotesYesYesYesNoYesNoNo
IMPYesYesYesYesYesNoNo
KMailNoYesYesYesYesNoNo
MailbirdYesYesNoNoNoNoNo
MailpileYes [Note 2]Yes [Note 2]YesYes [Note 3]Yes [Note 3]No [Note 4]No [Note 4]
mailxNoNoYesYesYesNoNo
Microsoft EntourageNoTerminated (2008)NoNoNoNoNo
Microsoft Office OutlookYesYesNoNoNoNoNo
Mozilla Mail & NewsgroupsTerminated (1.7.13)NoNo
Mozilla ThunderbirdYesYesYesYesYesNoNo
MulberryYesYesYesYesYesNoNo
MuttYesYesYesYesYesYes[23]No
Netscape MessengerTerminated (4.80)NoNo
Netscape Messenger 9Terminated (9.0a1)NoNo
nmh / MHNoYesYesYesYesNoNo
Opera MailYesYesYesYes?NoNo
Outlook ExpressIncluded (up to XP)NoNoNoNoNoNo
Pegasus MailYesNoNoNoNoYesNetWare
NLM
PineYesYesYesYesYesTerminated (3.96)[24]No
PocomailYesNoNoNoNoNoNo
RoundCubeYesYesYesYesYesNoNo
SeaMonkey Mail & NewsgroupsYesYesYesYesYesNoNo
SpicebirdYesplannedYesYesNoNoNo
SquirrelMailYesYesYesYesYesNoNo
SylpheedYesYesYesYesYesNoNo
The Bat!YesNoNoNoNoNoNo
TrojitáYesYesYesYesYesNoMeeGo
TurnpikeYesNoNoNoNoNoNo
Windows Live MailYesNoNoNoNoNoNo
Windows MailIncluded (Vista)NoNoNoNoNoNo
YAMNoNoNoNoNoNoAmigaOS
AROS
MorphOS
ZimbraYesYesYesYesYesNoNo
ClientMicrosoft WindowsmacOSLinuxBSDUnixDOSOther
  1. ^ Development stopped in 2008
  2. ^ a b Packaging planned
  3. ^ a b Free Software project, source available.
  4. ^ a b Free Software porting tangible provided OS has web browser.

Protocol support[edit]

Communication and access protocol support[edit]

What email and related protocols and standards are supported by each client.

ClientPOP3
fetch all messages		POP3
selected by filter		POP3
selected by user		IMAP4
SMTP
NNTP
LDAP v2
LDAP v3
EWSIPv6MAPI
AlpineYesYesYesYesYesYesYesYes?Yes?
Apple MailYesYesYesYesYes?YesYes?Yes?
Becky! Internet MailYesYesYesYesYesYes [Note 1]Yes????
CitadelYes??YesYes??????
Claws MailYesYesYesYesYesYesYesYes?Yes?
ConeYesNoNo [Note 2]YesYesYesYesYes???
CourierYesYesYesYesYesNoYesYes???
ElmNoNoNo????????
eM ClientYesNoNoYesYesNoNoNoYesYesNo
EmailTrayYesNoNoYesYesNoNoNoNoNoNo
EvolutionYesNoYesYesYesYesYesYesplug-in?plug-in
GnusYesYesNoYesYesYesYesYes???
GroupWiseYesYesYesYesYesYesYesYesNoYesYes
HiriNoNoNoNoNoNoYesYesYesYesNo
i.Scribe / InScribeYesNoYesYesYesNoYes [Note 3]Yes [Note 3]NoNoYes
HCL NotesYesYesYesYesYesYesYesYesNoYesNo
KMailYesYesYesYesYesNo [Note 4]Yes????
MailbirdYes??YesYes?YesYes?Yes?
MailpileYesNoNoYesYes??????
Microsoft EntourageYes??YesYesYesNoYesPartial??
Microsoft Entourage 2008, Web Services EditionYes??YesYes??YesYes??
Microsoft Office OutlookYesNoNoYesYesNoYes?YesYesYes
Mozilla Mail & Newsgroups???????????
Mozilla ThunderbirdYesNoNoYesYesYesPartialPartial[25]extensible[26]Yes?
MulberryYesNoNoYesYesNoYes??YesYes
MuttYesNo (possible with POP3 browser)No (possible with POP3 browser)YesYesNo (slrn looks alike)Partial (resolve real names through NSS)??Yes?
Netscape MessengerYes??Yes?Yes?????
Netscape Messenger 9Yes??Yes?Yes?????
nmh / MHYes??NoYes???No?No
Opera MailYesNoYesYesYesYesNoNo?YesYes
Outlook ExpressYesNoNoYesYesYesYes?No?No
Pegasus MailYesYesYesYesYesYes [Note 5]Yes????
PineYesNoNoYesYesYesYesNo???
PocomailYesYesYesYesYesNoNoNo???
RoundCubeYesNoNoYesYesNoYesYes???
SeaMonkey Mail & NewsgroupsYesNoNoYesYesYesPartial??Yes?
SpicebirdYesNoNoYesYesYesPartial????
SquirrelMailYesNoNoYesYesNoYesYes???
SylpheedYesYesYesYesYesYesYesNoNoYesNo
The Bat!YesYes [Note 6]Yes [Note 7]YesYesYes [Note 8]YesNoNoYesYes
TrojitáNoNoNoYesYesNoNoNoNoYesNo
TurnpikeYes???YesYes?????
Windows Live MailYesNoNoYesYesYesYes?NoYesNo
Windows MailYesNoNoYesYes???NoYesNo
YAMYesYesYesNoYesNoNoNo???
ZimbraYesNoNoYesYesNoYesYes???
ClientPOP3
fetch all messages		POP3
selected by filter		POP3
selected by user		IMAP4SMTPNNTPLDAP v2LDAP v3EWSIPv6MAPI

Integration protocol support[edit]

ClientIMSP
ACAP
RSS 0.91 FeedsRSS 1.0 FeedsRSS 2.0 FeedsATOM FeedsiCalendarMAPI/RPCCalDAVCardDAV
Alpine??????????
Apple Mail??????Yes?YesYes
Becky! Internet Mail??Yes [Note 9]Yes [Note 9]Yes [Note 9]Yes [Note 9]????
Citadel??????????
Claws Mail??NoYes [Note 10]Yes [Note 10]Yes [Note 10]Yes [Note 11]???
ConeNoNoNoNoNoNoNo???
CourierNoNoNoNoNoNoNo???
Elm??????????
eM ClientNoNoYesYesYesNoYesNoYesYes
EmailTrayNoNoNoNoNoNoNoNo??
EudoraNoYesNoNoNoNoNo???
EvolutionNoNoNo [Note 12]No [Note 12]No [Note 12]NoYesYesYesYes
Gnus??YesYesYesNo????
GroupWise?No????Yes???
HiriNoNoNoNoNoNoNoNoNoNo
i.Scribe / InScribeNoNoNoNoNoNoNoYes??
IBM Lotus NotesNoNoYes [Note 13]YesYesYesYes???
KMail??Yes [Note 14]Yes [Note 14]Yes [Note 14]Yes [Note 14]Yes [Note 15]?YesYes
Mailpile??????????
Microsoft Entourage??????Yes???
Microsoft Office Outlook??Yes [Note 16]Yes [Note 16]Yes [Note 16]Yes [Note 16]Yes [Note 17]YesNoNo
Mozilla Mail & Newsgroups??????????
Mozilla ThunderbirdNoNoYesYesYesYesYes [Note 18]Yes [Note 19]YesNo
MulberryYesYesNoNoNoNoYes?Yes?
Mutt??NoNoNoNoNo???
Netscape Messenger??????????
Netscape Messenger 9??????????
nmh / MH??????????
Opera Mail??YesYesYesYesNo?NoNo
Outlook Express??NoNoNoNoNo?NoNo
Pegasus Mail??Yes [Note 5]Yes [Note 5]Yes [Note 5]?????
PineNoNoNoNoNoNoNo???
PocomailNoNoYesYesYesNoNo???
SeaMonkey Mail & NewsgroupsNoNoYesYesYesYesYes [Note 18]???
SpicebirdNoNoYesYesYesYesYes [Note 18]No??
SquirrelMail??YesYesYesYesYesYes??
SylpheedNoNoNoNoNoNoNoNo??
The Bat!NoNoYes [Note 20]Yes [Note 20]Yes [Note 20]Yes [Note 20]NoYes?Yes
TrojitáNoNoNoNoNoNoNoNo??
Turnpike??????????
Windows Live Mail??YesYesYesYesNo???
Windows Mail??????????
YAMNoNoNoNoNoNoNo???
Zimbra??YesYesYesYesYes???
ClientIMSPACAPRSS 0.91 FeedsRSS 1.0 FeedsRSS 2.0 FeedsATOM FeedsiCalendarMAPI/RPCCalDAVCardDAV
  1. ^ Becky! requires FRNews or BkNews plugin installed for handling NNTP.
  2. ^ Cone has an option to either keep all POP3 mail on the server, or download all messages from the POP3 mailbox.
  3. ^ a b i.Scribe / InScribe requires a plugin to handle LDAP.
  4. ^ KDE supports Newsgroups (NNTP) by the use of KNode
  5. ^ a b c d Pegasus Mail can convert Newsgroup messages and/or RSS feeds to emails through the use of free add-ons.
  6. ^ 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.
  7. ^ 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.
  8. ^ The Bat! requires MyGate plugin installed for handling NNTP.
  9. ^ a b c d Becky! requires BkBlogReader or BkRSSviewer or B.F.R or BkRssReader plugin installed for handling RSS and ATOM.
  10. ^ a b c RSSyl plugin is required to read RSS and ATOM in Claws Mail.
  11. ^ vCalendar plugin is required to handle iCalendar in Claws Mail.
  12. ^ a b c The evolution-rss plugin (provided as a separate package by many distributions provides the RSS functionality in Evolution.
  13. ^ Studio Blog Reader is one RSS reader application for IBM Lotus Notes. IBM Lotus Notes version 8.x introduced a native RSS reader.
  14. ^ a b c d KDE supports feeds by the use of Akregator
  15. ^ KDE supports iCal by the use of KOrganizer
  16. ^ a b c d Support of feeds is available in Microsoft Office Outlook 2007. Earlier versions require RSSPopper plug-in.
  17. ^ Microsoft Outlook support of iCalendar varies by version.
  18. ^ a b c iCalendar is supported with an extension.
  19. ^ Mozilla Thunderbird only supports SimpleMAPI.[citation needed]
  20. ^ a b c d The Bat! versions prior to 6.3 required rss2mail or rss2pop3 plugin installed for handling RSS and ATOM. The Bat! versions 6.3 and later have built-in support for RSS.

Authentication support[edit]

ClientRegularMSN (NTLM)

browser login

Compuserve

(RPA)

MD5 APOP [Note 1]CRAM-HMAC [Note 2]DIGEST-MD5SCRAMwith hardware token

PKCS#11

BiometricSMTP Auth [Note 3]X.509 Client certificateOAuth
LOGINPLAINMD5SHA1RIPEMD
AlpineYesYesNoNoNoYesNoNoNo?NoNoYesNo?
Apple MailYesYesNoNo???????YesYesYesYes [Note 4]
Becky! Internet MailYesYesYes?YesYes??????YesYes?
Citadel???????????????
Claws MailYesYes??YesYes??YesYesNo?YesNo?
ConeYesYesNoNoNoYesYesNoNo?NoNoYesYes?
CourierYesYesYesNoYesYesYesNoYes?NoNoYesYes?
Elm???????????????
eM ClientYesYesYesNoNoYesNoNoYes?NoNoYesNoYes
EmailTrayYesYes??YesYesYesNo??NoNoYesNo?
EudoraYesYesYesYesYesYesNoNoNo?NoNoNo??
EvolutionYesYesYesNoYesYesNoNoYes?NoNoYesNoYes
GnusYesYes??YesYesYes?Yes???Yes??
GroupWise???????????????
HiriYesYesYesNoNoNoNoNoNo?NoNoNoNoYes
i.Scribe / InScribeYesYesYesNoYesNoNoNoNo?NoNoYesNoYes
IBM Lotus NotesYes?YesNoNoNo????YesNoYes??
KMailYesYesYesNoYesYesNoNoYes?NoNoYesYes?
Mailpile???????????????
Microsoft EntourageYesNoYes??Yes????Yes?YesYes?
Microsoft Office OutlookYesNoYesNoNoNoNoNoNo?NoNoYesNo?
Mozilla Mail & NewsgroupsYes??Yes?Yes?????????
Mozilla ThunderbirdYesYesYesNoYesYesNoNoNo[27]?YesNoYesYesYes
MulberryYesYesYesNoNoYesNoNoYes?NoNoYesYes?
MuttYesYesYes?YesYesNoNoYes?NoNo1.5.15Yes1.10.1
Netscape Messenger???????????????
Netscape Messenger 9???????????????
nmh / MH???????????????
Opera MailYesYesNoNoYesYesNo???NoNoYesYes?
Outlook ExpressYesNoYesNoNoNoNoNoNo?NoNoYesNo?
Pegasus MailYes?NoNoYesNoNoNoNo?NoNoYesYes?
PineYesYesNoNoNoYesNoNoNo?NoNoYesNo?
Pocomail???????????????
RoundCubeYesYes??YesYesYes?Yes?Yes?Yes??
SeaMonkey Mail & NewsgroupsYesYesYesNoYesYesNoNoNo[27]?YesNoYesYes?
SquirrelMailYesYes??YesYesYes?Yes?Yes?Yes??
SylpheedYesYesNoNoYesYesNoNoNo?NoNoYesNoNo
The Bat!YesYesYesYesYesYesNoNoNo?Yes [Note 5]Yes [Note 5]YesNoYes
TrojitáYesNoNoNoNoNoNoNoNo?NoNoYesNo?
Turnpike???????????????
Windows Live MailYesNoYesNoYesNoNoNoNo?NoNoNoNoNo
Windows Mail??????????????Yes [Note 6]
YAMYesYes??YesYes??????YesAmiSSL?
ZimbraYesYes??YesYes????Yes?Yes [Note 7]??
ClientRegularMSN (NTLM)

browser login

Compuserve

(RPA)

MD5 APOP [Note 1]CRAM-HMAC [Note 2]DIGEST-MD5SCRAMwith hardware token

PKCS#11

BiometricSMTP Auth [Note 3]SSL/TLS Client CertificateOAUTH
LOGINPLAINMD5SHA1RIPEMD
  1. ^ a b Description: RFC 1734
  2. ^ a b Description: RFC 2195
  3. ^ a b Description: RFC 2554
  4. ^ Minimum Mac OS version 10.11. Minimum iOS version 11.
  5. ^ a b Professional Edition.
  6. ^ Windows 10 required.
  7. ^ Zimbra Desktop supports SMTP auth, not sure about collaboration suite

SSL and TLS support[edit]

ClientSecure POP3Secure IMAP4Secure SMTPSecure NNTPSecure LDAPSNIOCSP [Note 1]CRL [Note 2]
SSLTLS [Note 3]SSLTLS [Note 3]SSLTLS [Note 4]SSLTLSSSLTLS
AlpineYesYesYesYesYesYesYesYes?Yes???
Apple MailYesYesYesYesYesYes???????
Becky! Internet MailYesYesYesYesYesYes???????
Citadel?????????????
Claws MailYesYesYesYesYesYesYesYesYesYes??Yes
ConeYesYesYesYesYesYesNoNoYesYes?NoNo
CourierNoNoNoNoNoNoNoNoNoNoNoNoNo
Elm?????????????
eM ClientYesYesYesYesYesYesNoNoNoNo?NoYes
EmailTrayYesYesYesYesYesYesNoNoNoNo?NoNo
EudoraYesYesYesYesYesYesNoNoYesYes???
EvolutionYesYesYesYesYesYesYesYesYesYes?NoNo
Gnus??YesYes?????????
GroupWise?????????????
HiriNoNoNoNoNoNoNoNoNoNoNoNoNo
i.Scribe / InScribeYesYesYesNoYesYesNoNoNoNo?NoNo
IBM Lotus NotesYesYesYes?YesYesYes?Yes??YesYes
KMailYesYesYesYesYesYesNoNo?????
Mailpile?Yes?Yes?????????
Microsoft EntourageYes?Yes?Yes?Yes?Yes????
Microsoft Office OutlookYesNoYesYesYesYes???????
Mozilla Mail & Newsgroups?????????????
Mozilla ThunderbirdYesYesYesYesYesYesYesYesYesNoYesYesYes
MulberryYesYesYesYesYesYesNoNoYesYes???
MuttYesYesYesYes1.5.151.5.15???????
Netscape Messenger?????????????
Netscape Messenger 9?????????????
nmh / MH?????????????
Opera MailYesPartial [Note 5]YesPartial [Note 5]YesPartial [Note 5]YesNoN/AN/A?YesYes
Outlook ExpressYesYesYesYesYesYes???????
Pegasus MailYesYesYesYesYesYes??Yes????
PineYesYesYesYesYesYesYesYesNoNo???
Pocomail?????????????
RoundCubeYesYesYesYesYesYesNoNoYesYes???
SeaMonkey Mail & NewsgroupsYesYesYesYesYesYesYesYesYesYesYesYesYes
SpicebirdYesYesYesYesYesYesYesYesYesYesYesYesYes
SquirrelMailYesYesYesYesYesYesNoNoYesYes???
SylpheedYesYesYesYesYesYesYesYes?????
The Bat!YesYesYesYesYesYesNoNoNoNoYesYes [Note 6]Yes [Note 6]
Trojitá??YesYesYesYes?????Yes (system)Yes (system)
Turnpike?????????????
Windows Live MailYesNoYesNoYesNo???????
Windows MailYesNoYes?Yes????????
YAMYesYesNoNo?????????
ZimbraYesYesYesYesYesYesYesYesYesYes???
ClientSecure POP3Secure IMAP4Secure SMTPSecure NNTPSecure LDAPSNIOCSP [Note 1]CRL [Note 2]
SSLTLS [Note 3]SSLTLS [Note 3]SSLTLS [Note 4]SSLTLSSSLTLS
  1. ^ a b Online Certificate Status Protocol - Description: RFC 2560
  2. ^ a b Certificate revocation list - Description: RFC 3280
  3. ^ a b c d Description: RFC 2595
  4. ^ a b Description: RFC 2487
  5. ^ a b c Opera Mail does not support STARTTLS command on special ports, like 995 for pop3 connection
  6. ^ a b Since version 4.2, The Bat! supports two modes of X.509 certificate handling: Internal Implementation and via Microsoft CryptoAPI. CRLs and OCSP are only supported in the latter mode during TLS connections.

Features[edit]

Information on what features each of the clients support.

General features[edit]

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.

ClientHTML emailUTF-8 supportImage blockingJunk filteringPhishing filteringThread viewConversation viewPGP supportS/MIME support
localserver- sideinlinePGP/MIME or OpenPGPprotocolOCSPCRLcertificates on tokens, smartcards support
AlpineRead onlyYesYes???Yes?Yes?Yes???
Apple MailYesYesYesYesYes?YesYesNoNoYesYesYesNo
Becky! Internet MailYesYesYesNoNoNoYesNoYes?Yes???
CitadelYesYesNoYes [Note 1]??No??????
Claws MailRead-onlyYesYesYesYesYesYes?YesYesYes?YesYes
ConeRead onlyYesYesYesNoNoYes?NoYesNoNoNoNo
CourierYesNoNoYesYes?No???????
Elm??????????????
eM ClientYesYesYesNoYesYesNoYesYesYesYesNoYesYes
EmailTrayYesYesYesNoYes?NoNoNoNoNoNoNoNo
EudoraYesNoYesPro onlyPro only?YesNoYes [Note 2]Yes [Note 2]Yes???
EvolutionYesYesYesYes?NoYesNoYesYesYes???
GnusYesYesYesYesYes?Yes?YesYesYes??Yes
GroupWiseYesYesYesYes??Yes???????
HiriYesYesYesYesYes?YesYesYesNoNoNoNoNo
i.Scribe / InScribeRead-onlyYesYesYesNo?Yes?YesNoNoNoNoNo
HCL NotesYesYesYesYesYesYesYes [Note 3]?YesYes
(4.1.2+)		YesYes[28]YesYes
KMailYesYesYesYes??YesYesYes
(with GPG)		Yes
(1.5+, with GPGME)		YesYesYes?
MailbirdYesYesYesYesYesYesYesYes?NoNoNoNoNo
Mailpile?Yes?????Yes?Yes????
Microsoft EntourageYesYesYesYesYesYes???YesYes??Yes
Microsoft Office OutlookYesYesYesYesYesYesYesYes (2010+)[29]NoNoYes?YesYes
Mozilla Mail & Newsgroups??????????????
Mozilla ThunderbirdYesYes [Note 4]YesYesYesYes [Note 5]YesYesYes [Note 6]YesYesYes?Yes
MulberryYesYesYesNoYes?Yes?Yes [Note 7]Yes [Note 7]Yes [Note 7]???
MuttRead-onlyYesYes
(no support for images)		Yes??YesYesYesYesYes?Yes (with GPGME)?
Netscape Messenger??????????????
Netscape Messenger 9??????????????
nmh / MH??????????????
Opera MailYesYesYesYesYesNoYesNoNoNoNoNoNoNo
Outlook ExpressYesYesYesNo??Yes?Yes [Note 8]No [Note 9]Yes???
Pegasus MailYesYesYesYesYesYesYes?YesYes
(sending is broken)		?NoNoNo
PineRead-onlyYesYesNo??Yes?Yes
(with Pine Privacy Guard)		NoYes???
PocomailYesYesYesYesYes?????????
RoundCubeYesYesYesYesYesYes (depends on antivirus)Yes??YesYes???
SeaMonkey Mail & NewsgroupsYesYesYesYes?YesYes?Yes [Note 6]Yes [Note 6]YesYes?Yes
SpicebirdYesYesYesYes?YesYes?YesYesYesYes?Yes
SquirrelMailYesYesYesYesYesYes (depends on antivirus)Yes??YesYes???
SylpheedNo [Note 10]YesYesYes??Yes?NoYes????
The Bat!YesYesYes [Note 11]YesYes?Yes?YesYesYesPartial [Note 12]Partial [Note 12]Yes [Note 12]
TrojitáRead onlyYesYesNoYesNoYesYesNoRead onlyRead onlyRead onlyRead onlyRead only
TurnpikeRead-only?????????????
Windows Live MailYesYesYesYesYesYesYesYesYes?Yes???
Windows MailYesYes?Yes??????????
YAM?Yes?Yes??NoNoYes?????
ZimbraYesYesYesYesYesYes (depends on antivirus)Yes??No???
ClientHTML emailUTF-8 supportImage blockingJunk filteringPhishing filteringThread viewConversation viewPGP supportS/MIME support
localserver- sideinlinePGP/MIME or OpenPGPprotocolOCSPCRLcertificates on tokens, smartcards support
  1. ^ Citadel plugs Mail into SpamAssassin
  2. ^ a b Eudora requires a plugin to handle PGP.
  3. ^ First release 6.0 (September 2003), [1] enhancements introduced in release 7.0 (August 2005)
  4. ^ Although Thunderbird supports UTF-8, its handling of line wraps causes problems with long lines of text that don't contain spaces, which essentially makes it unusable for certain languages (e.g. Chinese, Japanese, Korean) [2]
  5. ^ Mozilla Thunderbird adds this feature in Thunderbird 1.5.0.4
  6. ^ a b c Using PGP in Thunderbird requires Enigmail.
  7. ^ a b c PGP/GPG and S/MIME support require a free (included) plugin.
  8. ^ Using PGP in Outlook Express requires a plugin.
  9. ^ Outlook Express does not display PGP/MIME signed messages.
  10. ^ 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.
  11. ^ The Bat is not able to display inline images.
  12. ^ a b c The Bat! supports two modes of S/MIME: Internal Implementation and via Microsoft CryptoAPI.[30] CRLs and OCSP are only supported in the latter mode. Internal implementation only supports Aladdin eToken Pro or Rainbow iKey1000[31] 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.

Messages features[edit]

ClientLabel messagesReformat received messagesBi-directional text supportComposing messagesNative images previewPostpone / scheduled message sendingNative documents preview
with colorswith flagantideleteadd noteedit headers (e.g., Subject)forced recode [Note 1]Spell checkingSignaturesBottom-posts repliesjpeggifbmppngotherstxtpdfdocxlsodtodsothers
AlpineYesYes?????YesYes??????YesYes??????
Becky! Internet MailYesYes?YesYesYes?YesYesYesYesYesYesYes?????????
Citadel???????????????????????
Claws MailYesYesYesNoYesYesYesYesYesYesYesYesYesYes?YesYeswith a plugin?????
ConeYesYesYesNo???YesNo?NoNoNoNoNo????????
CourierYesYesNoNoYes??YesYes?NoNoNoNoNoYes?NoNoNoNoNo?
Elm???????????????????????
eM ClientYesYesNoNoNoNoYesYesYesYesYesYesYesYesYesYes???????
EmailTrayYesNoNoNoNoNo?YesYesYesYesYesYesYes?NoYesYesYesYesNoNo?
EudoraYesYesNoNoYes??YesYes?YesYesYesYesQuickTimeYes???????
EvolutionYesYes??No?YesYesYes?YesYesYesYes?????????
GnusYesYesYes????YesYesYesYesYesYesYesXPMYes???????
GroupWiseYesYesYesYesYes??YesYesYesYesYesYesYes?YesYesYesYesYesYesYes?
HiriYesYesNoYesNoNoNoYesNoYesYesYesYesYesYesNoNoNoNoNoNoNoNo
i.Scribe / InScribeYesNoNoYesNoNoNoYes [Note 2]YesYesYes [Note 3]YesYesYes [Note 4]ICO, TIFFYesNoNoNoNoNoNoNo
HCL NotesYesYes??Yes??YesYes?YesYesYesNoCGM, Lotus PIC, PCX, TIFF?YesYesYesYes???
KMailYes[32]YesNoYes???YesYes?YesYesYesYes?????????
MailbirdYesYes?Yes???YesYesYesYesYesYesYes?YesYesYesYesYesNoNo?
Mailpile???????????????????????
Microsoft EntourageYesYes?Yes[Note 5]???YesYes?YesYes?Yes???Yes?????
Microsoft Office OutlookYesYesNoYesYes??YesYesNoYesYesYesYes?YesYeswith a pluginYesYes20102010PowerPoint
Mozilla Mail & Newsgroups???????????????????????
Mozilla ThunderbirdYesYes??with a plugin[33]??YesYesYes [Note 6]YesYesYesYesICOYes [Note 7]YesYesNoNoNoNoNo
Mulberry?Yes?????YesYes?NoNoNoNoNo????????
MuttYesYesNoNoYes??YesYes?NoNoNoNoNopostpone???????
Netscape Messenger???????????????????????
Netscape Messenger 9???????????????????????
nmh / MH???????????????????????
Opera MailYesYesNoNo??YesYesYes?YesYesYesYesAPNG, ICO, SVG, WBMP, XBM, WebPNoNoNoNoNoNoNoNo
Outlook ExpressNoYesNoNo???YesYes?YesYesYesYesICO, art????????
Pegasus MailYesYesYesYesin indexNoNoYesYesNo [Note 8]YesYesYesYesTIFFN/AYesNoNoNoNoNoRTF, HTML
PineYesYes??Nowith a patch [Note 9]?Yes [Note 10]Yes?NoNoNoNoNo????????
PocomailYesYes?Yes???YesYes?YesYesYesYes?????????
RoundCubeYesYesYesYes??YesYesYes?YesYesYesYes??YesYesYesYesYesYes?
SeaMonkey Mail & NewsgroupsYesYesNoNo???YesYes?YesYesYesYes?????????
SquirrelMailYesYesYesYes??YesYesYes?YesYesYesYes??YesYesYesYesYesYes?
SylpheedYesYesNoNo???YesYes?YesYesYesYes??YesNoNoNoNoNo?
The Bat!YesYesYesYesNoNoNoYesYesYesYesYesYesYesICO, emfYesYesNoNoNoNoNoNo
TrojitáNoYes??NoNoYesNoYesYesYesYesYesYesYesYesYesNoNoNoNoNoYes
TurnpikeYes??No???YesYes?YesYesYesNo?????????
Windows Live MailNoYesNoNo???YesYes?YesYesYesYes?????????
Windows Mail???????????????????????
YAMNoNoNoNoNoNoNoYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYes
ZimbraYesYesYesYes???YesYes?YesYesYesYes?????????
ClientLabel messagesReformat received messagesBi-directional text supportComposing messagesNative images previewPostpone/?scheduled message sendingNative documents preview
with colorswith flagantideleteadd noteedit headers (e.g., Subject)forced recode [Note 1]Spell checkingSignaturesBottom-posts repliesjpeggifbmppngotherstxtpdfdocxlsodtodsothers
  1. ^ a b It's a frequent problem for people dealing with Cyrillic/Russian in email messages that the message is not encoded in the encoding declared in its headers and thus can't be read. With such a message (with a wrong declaration of the encoding), it well might be the case that it passed through several incorrect recoding stages while it was being sent and delivered; thus it's not possible to correctly render it and read it if one uses the common type of the interface for choosing the encoding (such as the menu in Mozilla Firefox). An example of such a complex case of a wrongly declared encoding: a message was entered through a webform in the windows-1251 encoding, but the web interface incorrectly assumed that it was in latin-1; based on this assumption, it performed the recoding from latin-1 to utf-8. The result of this operation cannot be correctly decoded through the common encoding-selection interface; it can only be decoded through a two-stage recoding: first from utf-8 to latin-1, then from windows-1251 to utf-8 (assuming that one works in a Unicode environment). After it is decoded, it is desirable to store it in the recoded form instead of the original, in order to be able to read it easily afterwards, and to quote it for replies.
  2. ^ i.Scribe / InScribe supports full integration with GNU Aspell, which is its requirement for spell checking.
  3. ^ i.Scribe / InScribe requires libjpeg.
  4. ^ i.Scribe / InScribe requires libpng.
  5. ^ Entourage can link a message to a note.
  6. ^ Configurable to start replies at top or bottom, with separate configuration of signature position
  7. ^ Thunderbird requires SL8TR extension.
  8. ^ Starts replies with cursor at top, but is configurable regarding whether to include a blank space at the top for replies or not; some interleaved-posting users prefer starting the cursor at the top so they can trim the quotes
  9. ^ The recoding engine and interface extensions that would solve the described recoding problems have been developed as a patch for Pine; it is to be found in the package pine-4.58L-alt4.src.rpm(ftp) for ALTLinux (under the name pine-4.58L-alt2-0.4.1.diff). Its essential feature is to enable to forcibly recode messages, save them in the recoded form, and quote in replies.
  10. ^ Pine supports full integration with GNU Aspell or other external speller, which is its requirement for spell checking.

Database, folders and customization[edit]

ClientMessage file formatEncrypted databaseVirtual foldersScheduled backupNew mail notificationCustomizable interfaceCustomizable keybindingsFragmented messages [Note 1]Database search with regular expressions supportIndexed searchSearch folders [Note 2]IMAP
tickertray icontooltipsoundSearchIDLE
Alpinembox, mbx, MIX, maildir (with patches), MMDF, tenex, mtx, MH, mx, news, phile?YesPartial???YesYesNo?NoYesYesYesNo
Becky! Internet Mailmbox??NoYes?YesYes???Yes?YesYesYes
Citadel????????????????
Claws MailMH, mbox (plugin)NoNoNoYesYesYesYesYesYes???NoYesNo
Conembox, maildirNoNoNoNo???Yes (colors)NoNoNoNoYesYesYes
CourierProprietaryYes (weak)Yes?????Yes (layout)No?NoNoYesNoYes
Elm????????????????
eM ClientProprietary (sqlite)YesYesYesYesYesNoYesYesYesNoNoYesYesNoYes
EmailTrayProprietaryYesYesNoYesYesNoYesNoNoNoNoYesYes??
Eudoramodified mboxNoYesNoNoYesYesYesYesYesYesYes[specify]YesYesYes?
Evolutionmaildir, mbox, MHNoYesNoNoYesYesYesPartialYes [Note 3]YesYesYesYesYesYes
Gnusbabyl, maildir, mbox, MMDF, news, rnews, SOUP, outlook, oe-dbxNoYesNoNo???YesYesYesYesYes[Note 4]YesYes?
GroupWiseProprietaryYesYesYes?YesYesYesYes???YesYesYesNo
HiriProprietaryNoNoNoNoNoNoNoYesNoNoNoYesYesNoNo
IBM NotesProprietaryYes[35]YesYesYesYesYesYesYesYesYes [Note 5]NoYesYes?No
KMailmbox, maildirNoYesNo????YesYesNoYes?YesYesYes
MailbirdProprietaryNoYesNoYesYesYesYesYesYesNoYesPartialYesYesYes
Mailpile????????????????
Microsoft EntourageProprietary (Personal Storage Table)?YesPartial [Note 6]????PartialNoNoPartial [Note 7]YesYesYesYes
Microsoft Office OutlookProprietary (Personal Storage Table)YesYesYes?YesYesYesYesYes??Yes [Note 8]Yes?Yes
Mozilla Mail & Newsgroupsmbox???????????????
Mozilla Thunderbirdmbox, maildirNoYes??YesYesYesYes [Note 9]?No?Yes (as of 3.0)YesYesYes
Mulberrymbox [Note 10]Partial [Note 11]Partial [Note 11]Partial [Note 11]????Yes??Yes[specify]Partial [Note 11]NoYesNo
Muttmbox, MMDF, MH, maildirYes (with compressed folders patch[36])? (has limit command)No????YesYes?YesYes[Note 12]Yes[Note 12]YesYes
Netscape Messengermbox???????????????
Netscape Messenger 9mbox???????????????
nmh / MHMHNoYesNoNo???YesYes?YesYesYesNo?
Opera Mailmbox, MH, ProprietaryNoYes
(all folders are virtual)		NoNoYesYesYesYesYesNoYesYesYes?Yes
Outlook ExpressProprietaryNoNoNo?YesNoYesNoNoYes?No??Yes
Pegasus MailProprietary (mbox-like)NoYesNo?YesYesYesYes??Yes?YesYesNo[39]
Pinembox, mbx, MIX, maildir (with patches), MMDF, tenex, mtx, MH, mx, news, phile??????????????No
PocomailmboxYesYesYes????Yes??YesYesYes??
RoundCube[IMAP Server]???YesNoNoYesYesYes???YesYes?
i.Scribe / InScribeProprietary (sqlite)NoNoNoNoYesNoYesYesNoNoNoNoNoNoYes
SeaMonkey Mail & Newsgroupsmbox???YesYesYesYes??????YesYes
SquirrelMail[IMAP Server]???YesNoNoYesYesYes???YesYes?
SylpheedMHNoYesNo?Yes??YesYesNoNo [Note 13]No [Note 13]Yes?No
The Bat!ProprietaryYes (AES 128 bit)

(with Pro and Voyager version) [Note 14]

YesYesYesYesNoYesYesYesYesYes

(PCRE 6.2)

NoYesYesYes
TrojitáIMAPNoNoNoNoYesNoNoYesYesNoNoYesNoYesYes
TurnpikeProprietaryYesYes???????Yes??Yes??
Windows Live MailFile System (.eml)NoNoNoNoYes?YesYesNoYesNoYesYes??
Windows Mail???????Yes???????Yes
YAMmbox, maildir, oe-dbxNoNoNo??YesYesYesNoNoNoNoNoNoNo
ZimbraFile systemNoYesYes????YesYesYesYesYesYesYesYes
ClientMessage file formatEncrypted databaseVirtual foldersScheduled backupNew mail notificationCustomizable interfaceCustomizable keybindingsFragmented messages [Note 1]Database search with regular expressions supportIndexed searchSearch folders [Note 2]IMAP
tickertray icontooltipsoundSearchIDLE
  1. ^ a b Fragmented messages make it 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
  2. ^ a b Search Folders are virtual folders that contain views of all email items matching specific search criteria. Search Folders display the results of previously defined search queries.
  3. ^ Editable keybindings is part of GNOME, provided "Editable menu accelerators" is enabled in GNOME's "Menus & Toolbars" control applet.
  4. ^ Via nnir backends such as Notmuch[34]
  5. ^ Fragmented messages are called truncated document in Lotus Notes.
  6. ^ With Entourage 2008, you can use AppleScript and various internal/external scheduling mechanisms to create timed backups of Entourage Data.
  7. ^ With Entourage 2008 and later versions of 2004, you can use the Spotlight data to search what's in the Entourage database via regular expression in the file system in Terminal or via Spotlight's ...interesting...version of "regular expressions".
  8. ^ supported since Office 2007.
  9. ^ Thunderbird's interface can be user customized via the use of themes (which can reposition and skin controls)
  10. ^ 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.
  11. ^ a b c d Mulberry is a dedicated IMAP client; If the IMAP server has these abilities, Mulberry can use them.
  12. ^ a b Via Notmuch or other indexers.[37][38]
  13. ^ a b 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.
  14. ^ 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.

Templates, scripts and programming languages[edit]

ClientMessage templatesMessage templates individual forSupport in message templates scripts, programming languages
newreplyforwardread confirmationsaveprintJavaScriptVBScriptPHP ScriptsPythonRegular expressionsJavaOther (specify)
AlpineYesYesYes???anyNoNoNoNo?No?
Becky! Internet MailYesYesYesYesYesYesany
account
folder
??????
Citadel??????????????
Claws MailYesYesYesYesYesYesaccount
folder
NoNoNoYes??Perl
ConeYesNoNoNoNoNo?NoNoNoNoNoNoNo
CourierYesYesYesNoYesYes?NoNoNoNoNoNoNo
Elm??????????????
eM ClientYesYesYesYesYesYesaccountNoNoNoNoNoNoNo
EudoraYesYesYesYesYesYesanyNoNoNoNoYesNoNo
EvolutionYesYesYesYesYesYes????????
GnusYesYesYesYesYesYes?NoNoNoNoYesNoelisp
GroupWiseYesNoNoYesYes?????????
HiriYesYesYesNoYesYesanyNoNoNoNoNoNoNo
i.Scribe / InScribeYesYesYesNoNoNoanyNoNoNoNoNoNoInternal macros (similar to JavaScript)
IBM NotesYesYesYesYes???YesNoNoNoYes[40]YesLotusScript, Formula language
KMailYesYesYesNoNoNonone?NoNoNo???
Mailpile??????????????
Microsoft EntourageYesYesYesYes?????????AppleScript, Automator
Microsoft Office OutlookYesYesYesYes???NoNo?No?No?
Mozilla Mail & Newsgroups??????????????
Mozilla ThunderbirdYesYes[Note 1]Yes[Note 1]YesYesYesprofileYes??????
MulberryYesYesYesYes???NoNoNoNo???
MuttYesYesYesNo??anyNoNoNoNoYes?Internal macros
Netscape Messenger??????????????
Netscape Messenger 9??????????????
nmh / MH??????????????
Opera MailNoNoNoNoNoNoN/ANoNoNoNoNoNoNo
Outlook ExpressYesYes?Yes???YesYes?????
Pegasus MailYesYesYesYes??????????
PineYesYesYes???any?NoNo??No?
PocomailYesYesYes??Yes?NoNoNoNoNoNoPocoScript
RoundCubeYesYesYesYesYesYesYesNoNoNoNoNoNo?
SeaMonkey Mail & Newsgroups??????????????
SquirrelMailYesYesYesYesYesYesYesNoNoNoNoNoNo?
SylpheedYesYesYes????NoNoNoNoNo??
The Bat!YesYesYesYesYesYesaccount
folder
address book group
contact		Yes [Note 2]Yes [Note 3]Yes [Note 4]Yes [Note 5]YesPCRE 6.2Internal and plugins macros
Turnpike??????????????
Windows Live MailYes[Note 6]Yes[Note 6]?Yes[Note 6]???YesNo?????
Windows Mail??????????????
YAMYesYesYes?YesYes?NoNoNoNo??ARexx
ZimbraYesYesYesYesYesYesanyNoNoNoNoNo??
ClientMessage templatesMessage templates individual forSupport in message templates scripts, programming languages
newreplyforwardread confirmationsaveprintJavaScriptVBScriptPHP ScriptsPythonRegular expressionsJavaOther (specify)
  1. ^ a b Thunderbird supports HTML templates with "Stationery" add-on.
  2. ^ The Bat! supports JavaScript in message templates with the JavaScript Macro plugin.
  3. ^ The Bat! supports VBScript in message templates with the XMP plugin.
  4. ^ The Bat! supports PHP in message templates with the XMP plugin.
  5. ^ The Bat! supports Python in message templates with the TBPyxie plugin.
  6. ^ a b c Weak "stationery" system that only accept pages done with Word.

Internationalization[edit]

The Bat! supports Email Address Internationalization (EAI).[41][discuss]

As of October 2016, email clients supporting SMTPUTF8 included Outlook 2016,[42] mail for iOS, and mail for Android.[citation needed]

See also[edit]

  • Comparison of feed aggregators
  • Comparison of layout engines
  • Comparison of mail servers
  • Comparison of webmail providers
  • List of personal information managers
  • Unicode and email
  • Webmail

References[edit]

  1. ^ Elm Mail System GPL
  2. ^ "Pine License". Archived from the original on 2018-06-02. Retrieved 2006-02-24.
  3. ^ "Change Log". Retrieved 2021-01-08.
  4. ^ "Latest News". Retrieved 2020-07-29.
  5. ^ a b "The Birth of Eudora". Archived from the original on 2002-11-08. Retrieved 2007-04-10. CS1 maint: discouraged parameter (link)
  6. ^ Clasen, Matthias (24 March 2021). "GNOME 40 released". GNOME Mail Services (Mailing list). Retrieved 29 March 2021.
  7. ^ "Tags - GNOME / Geary".
  8. ^ a b "GNUS: a NNTP based news reader for GNU Emacs (1 of 2)". Archived from the original on 2016-03-03. Retrieved 2008-08-04. CS1 maint: discouraged parameter (link)
  9. ^ "KDE Ships KDE Applications and Platform 4.14.3". KDE. 11 November 2014. Retrieved 13 November 2015.
  10. ^ Alpha
  11. ^ tbd 2017
  12. ^ 1.00 RC
  13. ^ "Releases - mailpile/Mailpile". Retrieved 29 June 2020 – via GitHub.
  14. ^ "Release notes for Current Channel releases in 2020". Microsoft Docs. Retrieved 2020-07-19.
  15. ^ Tom Warren (September 24, 2018). "Microsoft launches Office 2019 for Windows and Mac". The Verge. Retrieved December 25, 2019.
  16. ^ "Thunderbird — Release Notes (78.9.1)". Mozilla Foundation. 2021-04-08. Retrieved 2021-04-08.
  17. ^ "The Mutt E-Mail Client". Stable. Retrieved 6 May 2021.
  18. ^ "Opera 12 and Opera Mail security update". 2016-02-16.
  19. ^ Pegasus Mail v4.7x Release Notes: June 7th 2018 - Pegasus Mail v4.73
  20. ^ "SeaMonkey 2.53.7.1 is released!". 2021-04-15. Retrieved 2021-04-15.
  21. ^ "Почтовый клиент Trojitá 0.7". linux.org.ru.
  22. ^ https://wiki.zimbra.com/wiki/Zimbra_Releases
  23. ^ "Other Programming Projects and Downloads". Archived from the original on 2007-04-04. Retrieved 2007-04-06. CS1 maint: discouraged parameter (link)
  24. ^ "PC-PINE-3.96 README". Retrieved 2007-04-06. CS1 maint: discouraged parameter (link)[permanent dead link]
  25. ^ Write to LDAP still missing after 10 years, Mozilla bug 86405
  26. ^ Add-ons include MesQuilla ExQuilla Exchange Web Services (alpha) (see also ExQuilla for Microsoft Exchange) and Provider for Microsoft Exchange
  27. ^ a b [3]
  28. ^ [4]
  29. ^ Sort Your Emails by Conversation in Outlook 2010 - How-To Geek
  30. ^ "List of features of The Bat! email client".
  31. ^ "The Bat! with Hardware Tokens".
  32. ^ "Configure KMail: Appearance Page". KDE (Documentation page). Archived from the original on May 30, 2018. Retrieved May 30, 2018.
  33. ^ [5]
  34. ^ Ingebrigtsen, Lars Magne (2015). "The Gnus Newsreader". Free Software Foundation, Inc. Retrieved 2016-11-21.
  35. ^ [6]
  36. ^ [7]
  37. ^ Using Notmuch with bare Mutt, the old fashioned way
  38. ^ "MuttWiki: UserCases/SearchingMail". Archived from the original on 2013-12-10. Retrieved 2013-02-13.
  39. ^ "Archived copy". Archived from the original on 2014-03-11. Retrieved 2014-03-11. CS1 maint: discouraged parameter (link) CS1 maint: archived copy as title (link)
  40. ^ [8]
  41. ^ "Starting with the version 6.0 The Bat! supports IDN (Internationalized Domain Names))".[better source needed]
  42. ^ "International email addresses - Outlook". support.office.com. Archived from the original on 2016-10-28. Retrieved 2016-10-27.

External links[edit]

  • T&B : Email : Clients (of historical interest—last updated in 1999)
  • Mail User Agents for Linux Based Platforms (includes many email clients not listed in the above tables)
  • Remail - research by The Collaborative User Experience group at IBM