The following tables compare general and technical features of notable standalone (offline) email client programs.

General

Basic general information about the clients: creator/company, O/S, license, and interface.

{| class="wikitable sortable sticky-header"

|-

! Client

! Author/Developer

! Operating system

! Software license

! User interface

|-

! | BlitzMail

| Dartmouth College

| Windows

|

| GUI

|-

! | Elm

| Internet Promotion Agency S.A.

| Windows, Android

|

| GUI

|-

! | Evolution

| The GNOME Project

| Unix-like

|

| GUI (GTK)

|-

! | FirstClass

| Open Text

|

|

| GUI

|-

! | Forté Agent

| Mark Sidell

| Windows

|

| GUI

|-

! | Geary

| The GNOME Project (formerly Yorba Foundation)

| Unix-like

|

| GUI (GTK)

|-

! | GNUMail

| Ludovic Marcotte and others

| Unix-like, macOS

|

| GUI

|-

! | Gnus

| Gnus team

| Cross-platform

|

| TUI and GUI

|-

! | GroupWise

| Micro Focus (formerly Novell)

| Cross-platform

|

| GUI

|-

! | Hiri

| Hiri

| Cross-platform

|

| GUI

|-

! | i.Scribe, InScribe

| Memecode

| Windows, macOS, Linux

|

| GUI

|-

! | HCL Notes (formerly IBM Notes and Lotus Notes)

| HCL Technologies (formerly IBM and Lotus Development), HCL Technologies

| Windows, macOS, Linux

|

| GUI (Notes), Web (Verse, iNotes) and Mobile (Traveler)

|-

! | IMP

| Horde LLC

| Cross-platform

|

| Webmail

|-

! | K-9 Mail (now known as Thunderbird Mobile)

| K-9 Dog Walkers: cketti, et al.

| Android

|

| GUI

|-

! | KMail

| KDE

| Cross-platform

|

| GUI (Qt)

|-

! | Mail (Windows)

| Microsoft

| Windows

|

| GUI

|-

! | Mailbird

| Mailbird

| Windows

|

| GUI

|-

! | Mailpile

| Mailpile

| Windows, macOS, Linux

|

| Webmail

|-

! | mailx

|

| Unix-like

|

| TUI

|-

! | Microsoft Entourage

| Microsoft

| macOS

|

| GUI

|-

! | Microsoft Outlook

| Microsoft

| Windows, macOS

|

| GUI

|-

! | Mozilla Mail & Newsgroups

| Mozilla Foundation

|

|

| GUI (XUL)

|-

! | Mozilla Thunderbird

| Mozilla Foundation

| Cross-platform

|

| GUI (XUL)

|-

! | Mulberry

| Cyrus Daboo (formerly Cyrusoft International, Inc./ISAMET)

| Cross-platform

|

| GUI

|-

! | Mutt

| Michael Elkins

| Cross-platform

|

| TUI (ncurses)

|-

! | Netscape Messenger

| Netscape Communications

|

|

| GUI

|-

! | Netscape Messenger 9

| Netscape Communications

|

|

| GUI

|-

! | Nylas Mail

| Nylas

|Windows, macOS, Linux

|

| GUI

|-

! | nmh / MH

| RAND Corporation

| Unix-like

|

| CLI

|-

! | Opera Mail

| Opera Software

| Cross-platform

|

| GUI

|-

! | Outlook Express

| Microsoft

| Windows

|

| GUI

|-

! | Pegasus Mail

| David Harris

| Windows

|

| GUI

|-

! | Pine

| University of Washington

| Cross-platform

|

| TUI

|-

! | Pocomail

| Poco Systems

| Windows

|

| GUI

|-

! | RoundCube

| The RoundCube Team

| Cross-platform

|

| Webmail

|-

! | Samsung Email

|Samsung Electronics

|Samsung, Android 8+

|

|GUI

|-

! | SeaMonkey Mail & Newsgroups

| SeaMonkey Council

| Cross-platform

|

| GUI (XUL)

|-

! | Spark

| Readdle

| macOS

|

| GUI

|-

! | SquirrelMail

| The SquirrelMail Project Team

| Cross-platform

|

| Webmail

|-

! | Superhuman

| Rahul Vohra

| Cross-platform

|

| Webmail

|-

! | Sylpheed

| Hiroyuki Yamamoto

| Cross-platform

|

| GUI (GTK2)

|-

! | The Bat!

| RitLabs

| Windows

|

| GUI

|-

! | Trojitá

| KDE

| Cross-platform

|

| GUI (Qt)

|-

! | Turnpike

| Thus PLC (Demon Internet)

| Windows

|

| GUI

|-

! | Vivaldi

| Vivaldi Technologies AS

| Cross-platform

|

| GUI (Chrome)

|-

! | Windows Live Mail

| Microsoft

| Windows

|

| GUI

|-

! | Windows Mail (Vista)

| Microsoft

| Windows

|

| GUI

|-

! | YAM

| YAM Open Source Team and contributing authors

| AmigaOS

|

| GUI

|-

! | Zimbra Desktop

| Zimbra

| Cross-platform

|

| GUI

|-class="sortbottom"

|}

Release history

A brief digest of the release histories.

{| class="wikitable sortable sticky-header"

|-

! Client

! First public date

! First public version

! First stable date

! First stable version

! data-sort-type="text" | Latest stable release

|-

! | Alpine

| 2006-11

| 0.8

| 2007 December

| 1.00

|

|-

! | Apple Mail

| 2001-03-24

| ?

| ?

| ?

| ()

|-

! | Becky! Internet Mail

| 1996

| 1

|

|

|

|-

! | Canary Mail

| 2017-06-15

| 1.0

| 2017-06-15

| 1.0

| 4.01 (5 June 2023)

|-

! | Citadel

| 1987

|

| 1988

| 1.00

|

|-

! | Claws Mail

| 2001-05

| 0.4.67

| 2005-01

| 1.0.0

|

|-

! | Courier

| 2004-06

| 3.5

| discontinued

| discontinued

|

|-

! | Elm

| 1986

|

| 1987-03

| 2

|

|-

! | eM Client

| 2007-11

| 1.0

| 2007-11

| 1.0

|

|-

! | EmailTray

| 2010-10

| 2.0

| 2011-03

| 3.11

|

|-

! | Eudora

| 1988

|

| 1988

|

| 1988-02-01

|

|

|

|-

! | Microsoft Entourage

|

|

|

|

|

|-

! | Microsoft Office Outlook

| 1997

| 97

| 1997

| 97

|

|-

! | Mozilla Thunderbird

| 2003-07-28

| 0.1

| 2004-12-07

| 1.0

|

|-

! | Mulberry

| 1996-09-20

| 1.0

| 1996-09-20

| 1.0

|

|-

! | Mutt

| 1995

|

|

|

|

|-

! | Netscape Messenger

|

|

|

|

|

|-

! | Netscape Messenger 9

| 2007-11-15

| 9.0a1

| discontinued

| discontinued

| 2007-11-15

|-

! | nmh / MH

| 1979

|

|

|

|

|-

! | Opera Mail

| 1996-09

| 2.1b1

| 1996-12

| 2.1

|

|-

! | Outlook Express

| 1996

| 3.0

|

|

|

|-

! | Pegasus Mail

| 1990

|

| 1990

|

|

|-

! | Pine

| 1992-01-15

| 2.00

| 1992-01-15

| 2.00

|

|-

! | Pocomail

| 1999

|

|

|

|

|-

! | RoundCube

| 2006

| 0.1-rc1

| 2014-04-07

| 1.0.0

|

|-

! | SeaMonkey Mail & Newsgroups

| 2005-09-15

| 1.0a

| 2006-01-30

| 1.0

|

|-

! | SquirrelMail

| 1999-12

| 0.1

| 2001-01

| 1.0

|

|-

! | Sylpheed

| 2000-01

| 0.1.0

| 2004-12

| 1.0.0

|

|-

! | The Bat!

| 1997-03

| 1.0 Beta

| 1998-03

| 1.00 Build 1310

|

|-

! | Trojitá

| 2009-08

| 0.1

| 2012-12

| 0.3.90

|

|-

! | Turnpike

| 1996 (circa)

| 1.0

| 1996 (circa)

| 1.0

|

|-

! | Vivaldi

| 2015-11-03

| Beta 1

| 2022-06-09

| 1.0

|

|-

! | Windows Live Mail

| 2007-11-06

| 12

| 2007-11-06

| 12

|

|-

! | Windows Mail

|

|

|

|

| 2007-01-01

|-

! | YAM

| 1995

| 1.0

| 1995

| 1.0

|

|-

! | Zimbra

| 2005-11

| Beta

| 2006-03

| 3.5

|

|-

|}

Operating system support

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

{| class="wikitable sortable sticky-header"

|-

! Client

! Microsoft Windows

! macOS

! Linux

! BSD

! Unix

! DOS

! Other

|-

! | Alpine

|

|

|

|

|

|

|

|-

! | Apple Mail

|

|

|

|

|

|

|

|-

! | Balsa

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

|

|

|

|-

! | Courier

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|-

! | eM Client

|

|

|

|

|

|

|

|-

! | EmailTray

|

|

|

|

|

|

|

|-

! | Eudora

|

|

|

|

|

|

|

|-

! | Evolution

|

|

|

|

|

|

|

|-

! | Forté Agent

|

|

|

|

|

|

|

|-

! | Geary

|

|

|

|

|

|

|

|-

! | Gnus

|

|

|

|

|

|

|

|-

! | GroupWise

|

|

|

|

|

|

|

|-

! | Hiri

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

|

|-

! | IBM Lotus Notes

|

|

|

|

|

|

|

|-

! | IMP

|

|

|

|

|

|

|

|-

! | KMail

|

|

|

|

|

|

|

|-

! | Mailbird

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|-

! | mailx

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

| (2008)

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

| colspan="5" (1.7.13)

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

|

|

|

|-

! | Mutt

|

|

|

|

|

|

|

|-

! | Netscape Messenger

| colspan="5" (4.80)

|

|

|-

! | Netscape Messenger 9

| colspan="5" (9.0a1)

|

|

|-

! | nmh / MH

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

|

|

|

|-

! | Outlook Express

| (up to XP)

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

|

|

|

|-

! | Pine

|

|

|

|

|

| (3.96)

|

|-

! | Pocomail

|

|

|

|

|

|

|

|-

! | RoundCube

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

|

|

|

|-

! | SquirrelMail

|

|

|

|

|

|

|

|-

! | Sylpheed

|

|

|

|

|

|

|

|-

! | The Bat!

|

|

|

|

|

|

|

|-

! | Trojitá

|

|

|

|

|

|

|

|-

! | Turnpike

|

|

|

|

|

|

|

|-

! | Vivaldi

|

|

|

|

|

|

|

|-

! | Windows Live Mail

|

|

|

|

|

|

|

|-

! | Windows Mail

| (Vista)

|

|

|

|

|

|

|-

! | YAM

|

|

|

|

|

|

|

|-

! | Zimbra

|

|

|

|

|

|

|

|-class="sortbottom"

! Client

! Microsoft Windows

! macOS

! Linux

! BSD

! Unix

! DOS

! Other

|}

Protocol support

Communication and access protocol support

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

{| class="wikitable sortable sort-under sticky-header"

! style="width:12em" | Client

! POP3 <br /> fetch all messages <br />(RFC 1939)

! POP3 <br /> selected by filter <br/ >(RFC 1939)

! POP3 <br /> selected by user <br />(RFC 1939)

! IMAP4<br />(RFC 3501)

! SMTP<br />(RFC 5321)

! NNTP<br />(RFC 3977)

! LDAP&nbsp;v2<br />(RFC 4511)

! LDAP&nbsp;v3<br />(RFC 4511)

! EWS

! IPv6<br />(RFC 2460)

! MAPI

|-

! | Alpine

|

|

|

|

|

|

|

|

|

|

|

|-

! | Apple Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Courier

|

|

|

|

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|

|

|

|

|-

! | eM Client

|

|

|

|

|

|

|

|

|

|

|

|-

! | EmailTray

|

|

|

|

|

|

|

|

|

|

|

|-

! | Evolution

|

|

|

|

|

|

|

|

|

|

|

|-

! | Gnus

|

|

|

|

|

|

| <!--- named ref does not exist--->

| <!--- named ref does not exist--->

|

|

|

|-

! | GroupWise

|

|

|

|

|

|

|

|

|

|

|

|-

! | Hiri

|

|

|

|

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

|

|

|

|

|

|-

! | HCL Notes

|

|

|

|

|

|

|

|

|

|

|

|-

! | KMail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailbird

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage 2008, Web Services Edition

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

|

| style="background: #ffffdd;" | No (possible with POP3 browser)

| style="background: #ffffdd;" | No (possible with POP3 browser)

|

|

| (slrn looks alike)

| (resolve real names through NSS)

|

|

|

|

|-

! | Netscape Messenger

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

|

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

|

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pine

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pocomail

|

|

|

|

|

|

|

|

|

|

|

|-

! | RoundCube

|

|

|

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|-

! | SquirrelMail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Sylpheed

|

|

|

|

|

|

|

|

|

|

|

|-

! | The Bat!

|

|

|

|

|

|

|

|

|

|

|

|-

! | Trojitá

|

|

|

|

|

|

|

|

|

|

|

|-

! | Turnpike

|

|

|

|

|

|

|

|

|

|

|

|-

! | Vivaldi

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Live Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Mail

|

|

|

|

|

|

|

|

|

|

|

|-

! | YAM

|

|

|

|

|

|

|

|

|

|

|

|-

! | Zimbra

|

|

|

|

|

|

|

|

|

|

|

|-

|-class="sortbottom"

! Client

! POP3 <br /> fetch all messages <br />(RFC 1939)

! POP3 <br /> selected by filter <br/ >(RFC 1939)

! POP3 <br /> selected by user <br />(RFC 1939)

! IMAP4<br />(RFC 3501)

! SMTP<br />(RFC 5321)

! NNTP<br />(RFC 3977)

! LDAP&nbsp;v2<br />(RFC 4511)

! LDAP&nbsp;v3<br />(RFC 4511)

! EWS

! IPv6<br />(RFC 2460)

! MAPI

|}

Integration protocol support

{| class="wikitable sortable sort-under sticky-header"

! style="width:12em" | Client

! IMSP<br />([https://datatracker.ietf.org/doc/id/draft-myers-imap-imsp-00.txt])

! ACAP<br />(RFC 2244)

! RSS 0.91 Feeds

! RSS 1.0 Feeds

! RSS 2.0 Feeds

! ATOM Feeds

! iCalendar<br />(RFC 5545)

! MAPI/RPC

! CalDAV<br />(RFC 4791)

! CardDAV<br />(RFC 6352)

|-

! | Alpine

|

|

|

|

|

|

|

|

|

|

|-

! | Apple Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Courier

|

|

|

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|

|

|

|-

! | eM Client

|

|

|

|

|

|

|

|

|

|

|-

! | EmailTray

|

|

|

|

|

|

|

|

|

|

|-

! | Eudora

|

|

|

|

|

|

|

|

|

|

|-

! | Evolution

|

|

|

|

|

|

|

|

|

|

|-

! | Gnus

|

|

|

|

|

|

|

|

|

|

|-

! | GroupWise

|

|

|

|

|

|

|

|

|

|

|-

! | Hiri

|

|

|

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

|

|

|

|

|-

! | IBM Lotus Notes

|

|

|

|

|

|

|

|

|

|

|-

! | KMail

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Pine

|

|

|

|

|

|

|

|

|

|

|-

! | Pocomail

|

|

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|-

! | SquirrelMail

|

|

|

|

|

|

|

|

|

|

|-

! | Sylpheed

|

|

|

|

|

|

|

|

|

|

|-

! | The Bat!

|

|

|

|

|

|

|

|

|

|

|-

! | Trojitá

|

|

|

|

|

|

|

|

|

|

|-

! | Turnpike

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Live Mail

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Mail

|

|

|

|

|

|

|

|

|

|

|-

! | YAM

|

|

|

|

|

|

|

|

|

|

|-

! | Zimbra

|

|

|

|

|

|

|

|

|

|

|-class="sortbottom"

! Client

! IMSP<br />([https://datatracker.ietf.org/doc/id/draft-myers-imap-imsp-00.txt])

! ACAP<br />(RFC 2244)

! RSS 0.91 Feeds

! RSS 1.0 Feeds

! RSS 2.0 Feeds

! ATOM Feeds

! iCalendar<br />(RFC 5545)

! MAPI/RPC

! CalDAV<br />(RFC 4791)

! CardDAV<br />(RFC 6352)

|}

Authentication support

{| class="wikitable sortable sort-under sticky-header-multi"

|-

! rowspan="2" |Client

! colspan="2" | Regular

! rowspan="2"

! rowspan="2"

! rowspan="2"

! colspan="3" | CRAM-HMAC<br/>

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2"

|-

!

!

!

!

!

|-

! | Alpine

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Apple Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|

|

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|-

! | Claws Mail

|

|

|

|

|

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|

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|

|

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|

|

|

|-

! | Courier

|

|

|

|

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|

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|

|

|

|

|

|-

! | Elm

|

|

|

|

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|

|

|

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|

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|-

! | eM Client

|

|

|

|

|

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|

|

|

|

|

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|

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|-

! | EmailTray

|

|

|

|

|

|

|

|

|

|

|

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|

|

|

|-

! | Eudora

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Evolution

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Gnus

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | GroupWise

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Hiri

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | IBM Lotus Notes

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | KMail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pine

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pocomail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | RoundCube

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

|

|

|

|

|

<!--

-->

SSL and TLS support

{| class="wikitable sortable sort-under sticky-header-multi"

|-

! rowspan="2" | Client

! colspan="2" | Secure POP3

! colspan="2" | Secure IMAP4

! colspan="2" | Secure SMTP

! colspan="2" | Secure NNTP

! colspan="2" | Secure LDAP

! rowspan="2" | SNI

! rowspan="2" | OCSP&nbsp;

! rowspan="2" | CRL&nbsp;

|-

! SSL

! TLS&nbsp;

! SSL

! TLS&nbsp;

! SSL

! TLS&nbsp;

! SSL

! TLS

! SSL

! TLS

|-

! | Alpine

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Apple Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Courier

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | eM Client

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | EmailTray

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Eudora

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Evolution

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Gnus

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | GroupWise

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Hiri

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | IBM Lotus Notes

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | KMail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pine

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pocomail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | RoundCube

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SquirrelMail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Sylpheed

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | The Bat!

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Trojitá

|

|

|

|

|

|

|

|

|

|

|

| (system)

| (system)

|-

! | Turnpike

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Live Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | YAM

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Zimbra

|

|

|

|

|

|

|

|

|

|

|

|

|

|-class="sortbottom"

! rowspan="2" | Client

! colspan="2" | Secure POP3

! colspan="2" | Secure IMAP4

! colspan="2" | Secure SMTP

! colspan="2" | Secure NNTP

! colspan="2" | Secure LDAP

! rowspan="2" | SNI

! rowspan="2" | OCSP&nbsp;

! rowspan="2" | CRL&nbsp;

|-class="sortbottom"

! SSL

! TLS&nbsp;

! SSL

! TLS&nbsp;

! SSL

! TLS&nbsp;

! SSL

! TLS

! SSL

! TLS

|}

Features

Information on what features each of the clients support.

General features

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.

{| class="wikitable sortable sort-under sticky-header-multi"

|-

! rowspan="2" | Client

! rowspan="2"

! rowspan="2"

! rowspan="2"

! colspan="2" | Junk filtering

! rowspan="2"

! rowspan="2"

! rowspan="2"

! colspan="2" | PGP support

! colspan="4" | S/MIME support

|-

! local

! server- side

! inline

! PGP/MIME or OpenPGP

! protocol

! OCSP

! CRL

! certificates on tokens,<br/>smartcards support

|-

! | Alpine

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Apple Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Courier

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | eM Client

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | EmailTray

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Eudora

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Evolution

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Gnus

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | GroupWise

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Hiri

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | HCL Notes

|

|

|

|

|

|

|

|

|

| <br />(4.1.2+)

|

|

|

|

|-

! | KMail

|

|

|

|

|

|

|

|

| <br />(with GPG)

| <br />(1.5+, with GPGME)

|

|

|

|

|-

! | Mailbird

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

|

|

|

| (2010+)

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

|

|

| style="background: #ffffdd;" | Yes<br />(no support for images)

|

|

|

|

|

|

|

|

|

| (with GPGME)

|

|-

! | Netscape Messenger

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

|

|

|

|

|

| style="background: #ffffdd;" | Yes<br />(sending is broken)

|

|

|

|

|-

! | Pine

|

|

|

|

|

|

|

|

| <br />(with Pine Privacy Guard)

|

|

|

|

|

|-

! | Pocomail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | RoundCube

|

|

|

|

|

| (depends on antivirus)

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SquirrelMail

|

|

|

|

|

| (depends on antivirus)

|

|

|

|

|

|

|

|

|-

! | Sylpheed

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | The Bat!

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Trojitá

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Turnpike

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Live Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | YAM

|

|

|

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|

|

|

|

|

|

|

|

|

|

|-

! | Zimbra

|

|

|

|

|

| (depends on antivirus)

|

|

|

|

|

|

|

|

|-class="sortbottom"

! rowspan="2" | Client

! rowspan="2"

! rowspan="2"

! rowspan="2"

! colspan="2" | Junk filtering

! rowspan="2"

! rowspan="2"

! rowspan="2"

! colspan="2" | PGP support

! colspan="4" | S/MIME support

|-class="sortbottom"

! local

! server- side

! inline

! PGP/MIME or OpenPGP

! protocol

! OCSP

! CRL

! certificates on tokens,<br/>smartcards support

|}

Messages features

{| class="wikitable sortable sort-under sticky-header-multi"

|-

! rowspan="2" | Client

! colspan="4" | Label messages

! colspan="2" | Reformat received messages

! rowspan="2"

! colspan="3" | Composing messages

! colspan="5" | Native images preview

! rowspan="2"

! colspan="7" | Native documents preview

|-

!

!

!

!

!

!

!

!

!

! jpeg

! gif

! bmp

! png

! others

! txt

! pdf

! doc

! xls

! odt

! ods

! others

|-

! | Alpine

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

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|

|

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|

|

|

|

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|

|

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|

|

|

|

|

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|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

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|

|

|-

! | Courier

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

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|

|-

! | Elm

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

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|

|

|

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|-

! | eM Client

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

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|

|

|

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|

|

|-

! | EmailTray

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

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|

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|-

! | Eudora

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

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|

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|

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|-

! | Evolution

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

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|-

! | Gnus

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

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|

|-

! | GroupWise

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

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|-

! | Hiri

|

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|

|-

! | i.Scribe / InScribe

|

|

|

|

|

|

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|

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|

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|

|-

! | HCL Notes

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

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|

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|

|

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|

|-

! | KMail

| <br/>

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

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|

|-

! | Mailbird

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

|

|

|

| <br/>

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

| PowerPoint

|-

! | Mozilla Mail & Newsgroups

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mulberry

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

| <!-- display txt-->

|

|

|

|

|

|

|-

! | Pine

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pocomail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | RoundCube

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SquirrelMail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Sylpheed

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | The Bat!

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Trojitá

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Turnpike

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Live Mail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Mail

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | YAM

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Zimbra

|

|

|

|

| <!-- edit headers-->

| <!-- recode -->

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-class="sortbottom"

! rowspan="2" | Client

! colspan="4" | Label messages

! colspan="2" | Reformat received messages

! rowspan="2"

! colspan="3" | Composing messages

! colspan="5" | Native images preview

! rowspan="2"

! colspan="7" | Native documents preview

|-class="sortbottom"

!

!

!

!

!

!

!

!

!

! jpeg

! gif

! bmp

! png

! others

! txt

! pdf

! doc

! xls

! odt

! ods

! others

|}

Database, folders and customization

{| class="wikitable sortable sort-under sticky-header-multi"

|-

! rowspan="2" | Client

! rowspan="2" | Message file format

! rowspan="2" | Encrypted database

! rowspan="2" | Virtual folders

! rowspan="2"

! colspan="4" | New mail notification

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2" | Indexed search

! rowspan="2" | Search folders

! colspan="4" | IMAP

|-

!

!

!

!

!

!

|-

! | Alpine

| mbox, mbx, MIX, maildir (with patches), MMDF, tenex, mtx, MH, mx, news, phile

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

| MH, mbox (plugin)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Courier

| Proprietary

| (weak)

|

|

|

|

|

|

| (layout)

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | eM Client

| Proprietary (sqlite)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | EmailTray

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Eudora

| modified mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Evolution

| maildir, mbox, MH

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Gnus

| babyl, maildir, mbox, MMDF, news, rnews, SOUP, outlook, oe-dbx

|

|

|

|

|

|

|

|

|

|

|

| <br/>

|

|

|

|-

! | GroupWise

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Hiri

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | IBM Notes

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | KMail

| mbox, maildir

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailbird

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mailpile

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Entourage

| Proprietary (Personal Storage Table)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Microsoft Office Outlook

| Proprietary (Personal Storage Table)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Mail & Newsgroups

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mozilla Thunderbird

| mbox, maildir

|

|

|

|

|

|

|

|

|

|

|

| (as of 3.0)

|

|

|

|-

! | Mulberry

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Mutt

| mbox, MMDF, MH, maildir

| (with compressed folders patch)

| (has limit command)

|

|

|

|

|

|

|

|

|

| <br/>

| <br/>

|

|

|-

! | Netscape Messenger

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Netscape Messenger 9

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | nmh / MH

| MH

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Opera Mail

| mbox, MH, Proprietary

|

| <br />(all folders are virtual)

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Outlook Express

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pegasus Mail

| Proprietary (mbox-like)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pine

| mbox, mbx, MIX, maildir (with patches), MMDF, tenex, mtx, MH, mx, news, phile

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Pocomail

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | RoundCube

| [IMAP Server]

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | i.Scribe / InScribe

| Proprietary (sqlite)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SeaMonkey Mail & Newsgroups

| mbox

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | SquirrelMail

| [IMAP Server]

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Sylpheed

| MH

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | The Bat!

| Proprietary

| style="background: #ddffdd;" | Yes (AES 128 bit)

(with Pro and Voyager version)

|

|

|

|

|

|

|

|

|

|

(PCRE 6.2)

|

|

|

|

|-

! | Trojitá

| IMAP

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Turnpike

| Proprietary

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Live Mail

| File System (.eml)

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Windows Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | YAM

| mbox, maildir, oe-dbx

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Zimbra

| File system

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-class="sortbottom"

! rowspan="2" | Client

! rowspan="2" | Message file format

! rowspan="2" | Encrypted database

! rowspan="2" | Virtual folders

! rowspan="2"

! colspan="4" | New mail notification

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2"

! rowspan="2" | Indexed search

! rowspan="2" | Search folders

! colspan="4" | IMAP

|-

!

!

!

!

!

!

|}

Templates, scripts and programming languages

{| class="wikitable sortable sort-under sticky-header-multi"

|-

! rowspan="2" style="width:12em" | Client

! colspan="6" | Message templates

! rowspan="2" style="width:12em" | Message templates individual for

! colspan="7" | 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

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Becky! Internet Mail

|

|

|

|

|

|

| <br />account<br />folder<br />

|

|

|

|

|

|

|-

! | Canary Mail

|

|

|

|

|

|

|

|

|

|

|

|

|

|*

|-

! | Citadel

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Claws Mail

|

|

|

|

|

|

| account<br />folder<br />

|

|

|

|

|

|

|

|-

! | Courier

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | Elm

|

|

|

|

|

|

|

|

|

|

|

|

|

|

|-

! | eM Client

|

|

|

|

|

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! | Eudora

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! | Evolution

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! | Gnus

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! | GroupWise

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! | Hiri

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! | i.Scribe / InScribe

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! | IBM Notes

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! | KMail

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! | Mailpile

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! | Microsoft Entourage

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! | Microsoft Office Outlook

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! | Mozilla Mail & Newsgroups

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! | Mozilla Thunderbird

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| profile

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! | Mulberry

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! | Mutt

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! | Netscape Messenger

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! | Netscape Messenger 9

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! | nmh / MH

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! | Opera Mail

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! | Outlook Express

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! | Pegasus Mail

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! | Pine

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! | Pocomail

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! | RoundCube

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! | SeaMonkey Mail & Newsgroups

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! | SquirrelMail

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! | Sylpheed

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! | The Bat!

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| account<br />folder<br />address book group<br />contact

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! | Turnpike

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! | Windows Live Mail

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! | Windows Mail

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! | YAM

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! | Zimbra

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|-class="sortbottom"

! rowspan="2" style="width:12em" | Client

! colspan="6" | Message templates

! rowspan="2" style="width:12em" | Message templates individual for

! colspan="7" | Support in message templates scripts, programming languages

|-class="sortbottom"

! new

! reply

! forward

! read confirmation

! save

! print

! JavaScript

! VBScript

! PHP Scripts

! Python

! Regular expressions

! Java

! Other (specify)

|}

Internationalization

The Bat! supports Email Address Internationalization (EAI).

As of October 2016, email clients supporting SMTPUTF8 included Outlook 2016, mail for iOS, and mail for Android.

See also

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

Notes

References

  • 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

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