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Comparison of email clients
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==Protocol support== ===Communication and access protocol support=== What email and related protocols and standards are supported by each client. {{sort-under}} {| class="wikitable sortable sort-under sticky-header" ! style="width:12em" | Client ! [[Post Office Protocol|POP3]] <br /> fetch all messages <br />([https://www.ietf.org/rfc/rfc1939.txt RFC 1939]) ! [[Post Office Protocol|POP3]] <br /> selected by filter <br/ >([https://www.ietf.org/rfc/rfc1939.txt RFC 1939]) ! [[Post Office Protocol|POP3]] <br /> selected by user <br />([https://www.ietf.org/rfc/rfc1939.txt RFC 1939]) ! [[Internet Message Access Protocol|IMAP4]]<br />([https://www.ietf.org/rfc/rfc3501.txt RFC 3501]) ! [[Simple Mail Transfer Protocol|SMTP]]<br />([https://www.ietf.org/rfc/rfc5321.txt RFC 5321]) ! [[Network News Transfer Protocol|NNTP]]<br />([https://www.ietf.org/rfc/rfc3977.txt RFC 3977]) ! [[Lightweight Directory Access Protocol|LDAP]] v2<br />([https://www.ietf.org/rfc/rfc4511.txt RFC 4511]) ! [[Lightweight Directory Access Protocol|LDAP]] v3<br />([https://www.ietf.org/rfc/rfc4511.txt RFC 4511]) ! [[Microsoft Exchange Server|EWS]] ! [[IPv6]]<br />([https://www.ietf.org/rfc/rfc2460.txt RFC 2460]) ! [[MAPI]] |- ! {{rh}} | [[Alpine (email client)|Alpine]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Apple Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Becky!|Becky! Internet Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|BECKY_frnews}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Canary Mail]] | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} |- ! {{rh}} | [[Citadel/UX|Citadel]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Claws Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh2}} | [[Courier (email client)|Courier]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Elm (email client)|Elm]] | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[eM Client]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} |- ! {{rh}} | [[EmailTray]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Evolution (software)|Evolution]] | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes2|plug-in}} | {{dunno}} | {{yes2|plug-in}} |- ! {{rh}} | [[Gnus]] | {{yes}} | {{yes}} | {{yes}}<ref>(setq gnus-select-method '(pop3 "pop.example.com")) <br / >(setq gnus-secondary-select-methods '((nntp "news.gnus.org"))) <br /> After configuring Gnus for POP3, you can use the gnus-group-get-new-news command to retrieve new messages from your POP3 server. </ref> | {{yes}} | {{yes}} | {{yes}} | {{yes}} <!---{{r|group=Note|GnusLDAP}} named ref does not exist---> | {{yes}} <!---{{r|group=Note|GnusLDAP}} named ref does not exist---> | {{no}} | {{yes}} | {{yes2|Plug-in}}<ref>{{cite web |title=w32-send-mapi.el |url=https://www.emacswiki.org/emacs/w32-send-mapi.el}}</ref> |- ! {{rh}} | [[GroupWise]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} |- ! {{rh}} | [[Hiri (email client)|Hiri]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} |- ! {{rh}} | [[Scribe Mail|i.Scribe / InScribe]] | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} {{r|group=Note|plugin}} | {{yes}} {{r|group=Note|plugin}} | {{no}} | {{no}} | {{yes}} |- ! {{rh}} | [[HCL Notes]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} |- ! {{rh}} | [[KMail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} {{r|group=Note|KDENNTP}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mailbird]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Mailpile]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Microsoft Entourage]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{partial}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Microsoft Entourage| Microsoft Entourage 2008, Web Services Edition]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Microsoft Office Outlook]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Mozilla Mail & Newsgroups]] | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mozilla Thunderbird]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{partial}} | {{partial}}<ref>Write to LDAP still missing after 10 years, [https://bugzilla.mozilla.org/show_bug.cgi?id=86405 Mozilla bug 86405]</ref> | extensible<ref>Add-ons include MesQuilla [http://mesquilla.com/extensions/exquilla/ ExQuilla Exchange Web Services (alpha)] (see also [https://addons.mozilla.org/en-US/thunderbird/addon/exquilla-exchange-web-services/ ''ExQuilla'' for Microsoft Exchange]) and [https://addons.mozilla.org/en-US/thunderbird/addon/provider-for-microsoft-exchang/ ''Provider'' for Microsoft Exchange] </ref> | {{yes}} | {{yes}} |- ! {{rh2}} | [[Mulberry (email client)|Mulberry]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh}} | [[Mutt (email client)|Mutt]] | {{yes}} | style="background: #ffffdd;" | No (possible with POP3 browser) | style="background: #ffffdd;" | No (possible with POP3 browser) | {{yes}} | {{yes}} | {{no}} ([[slrn]] looks alike) | {{partial}} (resolve real names through NSS) | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger 9]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[MH Message Handling System|nmh / MH]] | {{yes}} | {{dunno}} | {{dunno}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{no}} | {{dunno}} | {{no}} |- ! {{rh}} | Opera Mail | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Outlook Express]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{no}} | {{dunno}} | {{no}} |- ! {{rh}} | [[Pegasus Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|pegasusaddins}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pine (email client)|Pine]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pocomail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[RoundCube]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[SeaMonkey]] Mail & Newsgroups | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{partial}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[SquirrelMail]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Sylpheed]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{no}} |- ! {{rh}} | [[The Bat!]] | {{yes}} | {{yes}} {{r|group=Note|SelectiveDownload}} | {{yes}} {{r|group=Note|MessageDispatcher}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|BAT_mygate}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} |- ! {{rh}} | [[Trojitá]] | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{no}} |- ! {{rh2}} | [[Turnpike (software)|Turnpike]] | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Vivaldi_(web_browser)|Vivaldi]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} |- ! {{rh2}} | [[Windows Live Mail]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{no}} | {{yes}} | {{no}} |- ! {{rh2}} | [[Windows Mail]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{no}} | {{yes}} | {{no}} |- ! {{rh}} | [[YAM (Yet Another Mailer)|YAM]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Zimbra]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- |-class="sortbottom" ! Client ! [[Post Office Protocol|POP3]] <br /> fetch all messages <br />([https://www.ietf.org/rfc/rfc1939.txt RFC 1939]) ! [[Post Office Protocol|POP3]] <br /> selected by filter <br/ >([https://www.ietf.org/rfc/rfc1939.txt RFC 1939]) ! [[Post Office Protocol|POP3]] <br /> selected by user <br />([https://www.ietf.org/rfc/rfc1939.txt RFC 1939]) ! [[Internet Message Access Protocol|IMAP4]]<br />([https://www.ietf.org/rfc/rfc3501.txt RFC 3501]) ! [[Simple Mail Transfer Protocol|SMTP]]<br />([https://www.ietf.org/rfc/rfc5321.txt RFC 5321]) ! [[Network News Transfer Protocol|NNTP]]<br />([https://www.ietf.org/rfc/rfc3977.txt RFC 3977]) ! [[Lightweight Directory Access Protocol|LDAP]] v2<br />([https://www.ietf.org/rfc/rfc4511.txt RFC 4511]) ! [[Lightweight Directory Access Protocol|LDAP]] v3<br />([https://www.ietf.org/rfc/rfc4511.txt RFC 4511]) ! [[Microsoft Exchange Server|EWS]] ! [[IPv6]]<br />([https://www.ietf.org/rfc/rfc2460.txt 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]) ! [[Application Configuration Access Protocol|ACAP]]<br />([https://www.ietf.org/rfc/rfc2244.txt RFC 2244]) ! [[RSS (file format)|RSS 0.91]] [[Web feed|Feeds]] ! [[RSS (file format)|RSS 1.0]] [[Web feed|Feeds]] ! [[RSS (file format)|RSS 2.0]] [[Web feed|Feeds]] ! [[Atom (standard)|ATOM]] [[Web feed|Feeds]] ! [[iCalendar]]<br />([https://www.ietf.org/rfc/rfc5545.txt RFC 5545]) ! [[Messaging Application Programming Interface|MAPI/RPC]] ! [[CalDAV]]<br />([https://www.ietf.org/rfc/rfc4791.txt RFC 4791]) ! [[CardDAV]]<br />([https://www.ietf.org/rfc/rfc6352.txt RFC 6352]) |- ! {{rh}} | [[Alpine (email client)|Alpine]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Apple Mail]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh}} | [[Becky!|Becky! Internet Mail]] | {{dunno}} | {{dunno}} | {{yes}} {{r|group=Note|BECKY_rss}} | {{yes}} {{r|group=Note|BECKY_rss}} | {{yes}} {{r|group=Note|BECKY_rss}} | {{yes}} {{r|group=Note|BECKY_rss}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Canary Mail]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Citadel/UX|Citadel]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Claws Mail]] | {{dunno}} | {{dunno}} | {{no}} | {{yes}} {{r|group=Note|Claws}} | {{yes}} {{r|group=Note|Claws}} | {{yes}} {{r|group=Note|Claws}} | {{yes}} {{r|group=Note|Claws2}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Courier (email client)|Courier]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Elm (email client)|Elm]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[eM Client]] | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{yes}} |- ! {{rh}} | [[EmailTray]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Eudora (email client)|Eudora]] | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Evolution (software)|Evolution]] | {{no}} | {{no}} | {{no}} {{r|group=Note|Evolution-rss}} | {{no}} {{r|group=Note|Evolution-rss}} | {{no}} {{r|group=Note|Evolution-rss}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} |- ! {{rh}} | [[Gnus]] | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}}<ref>{{cite web |title=GNU emacs - rss |url=https://www.emacswiki.org/emacs/Rss}}</ref> | {{yes}}<ref>via org-mode</ref> | {{yes}} | {{yes}} | {{yes}} |- ! {{rh}} | [[GroupWise]] | {{dunno}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Hiri (email client)|Hiri]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Scribe Mail|i.Scribe / InScribe]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[IBM Lotus Notes]] | {{no}} | {{no}} | {{yes}} {{r|group=Note|NotesRSS}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[KMail]] | {{dunno}} | {{dunno}} | {{yes}} {{r|group=Note|KDEFeeds}} | {{yes}} {{r|group=Note|KDEFeeds}} | {{yes}} {{r|group=Note|KDEFeeds}} | {{yes}} {{r|group=Note|KDEFeeds}} | {{yes}} {{r|group=Note|KDEiCal}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh}} | [[Mailpile]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Microsoft Entourage]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Microsoft Office Outlook]] | {{dunno}} | {{dunno}} | {{yes}} {{r|group=Note|OutlookFeeds}} | {{yes}} {{r|group=Note|OutlookFeeds}} | {{yes}} {{r|group=Note|OutlookFeeds}} | {{yes}} {{r|group=Note|OutlookFeeds}} | {{partial|Yes}} {{r|group=Note|OutlookiCal}} | {{yes}} | {{no}} | {{no}} |- ! {{rh2}} | [[Mozilla Mail & Newsgroups]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mozilla Thunderbird]] | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|MTB}} | {{yes}} {{r|group=Note|SimpleMAPI}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Mulberry (email client)|Mulberry]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Mutt (email client)|Mutt]] | {{dunno}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger 9]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[MH Message Handling System|nmh / MH]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | Opera Mail | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{no}} | {{no}} |- ! {{rh2}} | [[Outlook Express]] | {{dunno}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} |- ! {{rh}} | [[Pegasus Mail]] | {{dunno}} | {{dunno}} | {{yes}} {{r|group=Note|pegasusaddins}} | {{yes}} {{r|group=Note|pegasusaddins}} | {{yes}} {{r|group=Note|pegasusaddins}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pine (email client)|Pine]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pocomail]] | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[SeaMonkey]] Mail & Newsgroups | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|MTB}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[SquirrelMail]] | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Sylpheed]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[The Bat!]] | {{no}} | {{no}} | {{yes}} {{r|group=Note|BAT_rss2pop3}} | {{yes}} {{r|group=Note|BAT_rss2pop3}} | {{yes}} {{r|group=Note|BAT_rss2pop3}} | {{yes}} {{r|group=Note|BAT_rss2pop3}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} |- ! {{rh}} | [[Trojitá]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Turnpike (software)|Turnpike]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Live Mail]] | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Mail]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[YAM (Yet Another Mailer)|YAM]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Zimbra]] | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |-class="sortbottom" ! Client ! [[IMSP]]<br />([https://datatracker.ietf.org/doc/id/draft-myers-imap-imsp-00.txt]) ! [[Application Configuration Access Protocol|ACAP]]<br />([https://www.ietf.org/rfc/rfc2244.txt RFC 2244]) ! [[RSS (file format)|RSS 0.91]] [[Web feed|Feeds]] ! [[RSS (file format)|RSS 1.0]] [[Web feed|Feeds]] ! [[RSS (file format)|RSS 2.0]] [[Web feed|Feeds]] ! [[Atom (standard)|ATOM]] [[Web feed|Feeds]] ! [[iCalendar]]<br />([https://www.ietf.org/rfc/rfc5545.txt RFC 5545]) ! [[Messaging Application Programming Interface|MAPI/RPC]] ! [[CalDAV]]<br />([https://www.ietf.org/rfc/rfc4791.txt RFC 4791]) ! [[CardDAV]]<br />([https://www.ietf.org/rfc/rfc6352.txt RFC 6352]) |} {{reflist|group=Note|refs= <ref name=BECKY_rss>Becky! requires BkBlogReader or BkRSSviewer or B.F.R or BkRssReader plugin installed for handling RSS and ATOM.</ref> <ref name=BECKY_frnews>Becky! requires FRNews or BkNews plugin installed for handling NNTP.</ref> <!-- <ref name=EmacsLDAP> An Emacs module named EUDC extends [[Gnus]]/[[VM (View Mail)]] and [[BBDB]] to support LDAP.</ref> --> <ref name=KDENNTP>KDE supports Newsgroups (NNTP) by the use of [[KNode]]</ref> <ref name=KDEFeeds>KDE supports feeds by the use of [[Akregator]]</ref> <ref name=KDEiCal>KDE supports iCal by the use of [[KOrganizer]]</ref> <ref name=NotesRSS>Studio Blog Reader is one RSS reader application for [[IBM Lotus Notes]]. [[IBM Lotus Notes]] version 8.x introduced a native RSS reader.</ref> <ref name=OutlookFeeds>Support of feeds is available in [[Microsoft Office 2007#Microsoft Office Outlook|Microsoft Office Outlook 2007]]. Earlier versions require [http://www.paradisoft.com/rsspopper/rsspopper.asp RSSPopper] plug-in.</ref> <ref name=OutlookiCal>[[ICalendar#Microsoft Outlook|Microsoft Outlook support of iCalendar]] varies by version.</ref> <ref name=SelectiveDownload>''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.</ref> <ref name=MessageDispatcher>''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.</ref> <ref name=MTB>iCalendar is supported with an extension.</ref> <ref name=Claws>RSSyl plugin is required to read RSS and ATOM in Claws Mail.</ref> <ref name=Claws2>vCalendar plugin is required to handle iCalendar in Claws Mail.</ref> <ref name=BAT_mygate>The Bat! requires MyGate plugin installed for handling NNTP.</ref> <ref name=BAT_rss2pop3>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.</ref> <ref name=plugin>i.Scribe / InScribe requires a plugin to handle LDAP.</ref> <ref name=pegasusaddins>Pegasus Mail can convert Newsgroup messages and/or RSS feeds to emails through the use of free add-ons.</ref> <!-- <ref name=MailiCal>With Mail version 4, in macOS 10.6 Snow Leopard. In previous versions, Mail only links it with iCal.</ref> --> <ref name="Evolution-rss">The evolution-rss plugin (provided as a separate package by many distributions provides the RSS functionality in Evolution.</ref> <ref name=SimpleMAPI>Mozilla Thunderbird only supports SimpleMAPI.{{citation needed|date=May 2011}}</ref> }} ===Authentication support=== {{sort-under}} {| class="wikitable sortable sort-under sticky-header-multi" |- ! rowspan="2" |Client ! colspan="2" | Regular ! rowspan="2" {{verth|va=middle|MSN ([[NTLM]])<br/>browser login}} ! rowspan="2" {{verth|va=middle|Compuserve<br/>(RPA)}} ! rowspan="2" {{verth|va=middle|MD5 APOP {{r|group=Note|APOP}}}} ! colspan="3" | CRAM-HMAC<br/>{{r|group=Note|HMAC}} ! rowspan="2" {{verth|va=middle|DIGEST-MD5}} ! rowspan="2" {{verth|va=middle|SCRAM}} ! rowspan="2" {{verth|va=middle|with hardware token<br/>[[PKCS11|PKCS#11]]}} ! rowspan="2" {{verth|va=middle|Biometric}} ! rowspan="2" {{verth|va=middle|SMTP Auth {{r|group=Note|SMTPAUTH}}}} ! rowspan="2" {{verth|va=middle|[[X.509]]<br/>[[Client certificate]]}} ! rowspan="2" {{verth|va=middle|[[OAuth]]}} |- ! {{verth|va=middle|LOGIN}} ! {{verth|va=middle|PLAIN}} ! {{verth|va=middle|MD5}} ! {{verth|va=middle|SHA1}} ! {{verth|va=middle|RIPEMD}} |- ! {{rh}} | [[Alpine (email client)|Alpine]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{dunno}} |- ! {{rh}} | [[Apple Mail]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|AppleMailOAuth}} |- ! {{rh}} | [[Becky!|Becky! Internet Mail]] | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Canary Mail]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{yes}} |- ! {{rh}} | [[Citadel/UX|Citadel]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Claws Mail]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{yes}} | {{no}} | {{yes}} |- ! {{rh2}} | [[Courier (email client)|Courier]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Elm (email client)|Elm]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[eM Client]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{yes}} |- ! {{rh}} | [[EmailTray]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{dunno}} |- ! {{rh2}} | [[Eudora (email client)|Eudora]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Evolution (software)|Evolution]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{yes}} |- ! {{rh}} | [[Gnus]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[GroupWise]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Hiri (email client)|Hiri]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{no}} | {{yes}} |- ! {{rh}} | [[Scribe Mail|i.Scribe / InScribe]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{yes}} |- ! {{rh}} | [[IBM Lotus Notes]] | {{yes}} | {{dunno}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[KMail]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Mailpile]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Microsoft Entourage]] | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} | {{Yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{Yes}} | {{dunno}} | {{Yes}} | {{Yes}} | {{dunno}} |- ! {{rh}} | [[Microsoft Office Outlook]] | {{yes}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{dunno}} |- ! {{rh2}} | [[Mozilla Mail & Newsgroups]] | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mozilla Thunderbird]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}}<ref name="bugzilla.mozilla.org">{{Cite web|url=https://bugzilla.mozilla.org/show_bug.cgi?id=335924|title = 335924 - No authentication with DIGEST-MD5}}</ref> | {{dunno}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Mulberry (email client)|Mulberry]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[Mutt (email client)|Mutt]] | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{no|1.5.15}} | {{yes}} | {{no|1.10.1}} |- ! {{rh2}} | [[Netscape Messenger]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger 9]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[MH Message Handling System|nmh / MH]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | Opera Mail | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh2}} | [[Outlook Express]] | {{yes}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{dunno}} |- ! {{rh}} | [[Pegasus Mail]] | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh2}} | [[Pine (email client)|Pine]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{dunno}} |- ! {{rh2}} | [[Pocomail]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[RoundCube]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[SeaMonkey]] Mail & Newsgroups | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}}<ref name="bugzilla.mozilla.org"/> | {{dunno}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh}} | [[SquirrelMail]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Sylpheed]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{no}} |- ! {{rh}} | [[The Bat!]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{yes}} {{r|group=Note|TheBat}} | {{yes}} {{r|group=Note|TheBat}} | {{yes}} | {{no}} | {{yes}} |- ! {{rh}} | [[Trojitá]] | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{dunno}} |- ! {{rh2}} | [[Turnpike (software)|Turnpike]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Live Mail]] | {{yes}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh2}} | [[Windows Mail]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} {{r|group=Note|WindowsMailOAuth}} |- ! {{rh}} | [[YAM (Yet Another Mailer)|YAM]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes|AmiSSL}} | {{dunno}} |- ! {{rh}} | [[Zimbra]] | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} {{r|group=Note|Zimbra}} | {{dunno}} | {{dunno}} |-class="sortbottom" ! rowspan="2" |Client ! colspan="2" | Regular ! rowspan="2" {{verth|va=middle|MSN ([[NTLM]])<br/>browser login}} ! rowspan="2" {{verth|va=middle|Compuserve<br/>(RPA)}} ! rowspan="2" {{verth|va=middle|MD5 APOP {{r|group=Note|APOP}}}} ! colspan="3" | CRAM-HMAC<br/>{{r|group=Note|HMAC}} ! rowspan="2" {{verth|va=middle|DIGEST-MD5}} ! rowspan="2" {{verth|va=middle|SCRAM}} ! rowspan="2" {{verth|va=middle|with hardware token<br/>[[PKCS11|PKCS#11]]}} ! rowspan="2" {{verth|va=middle|Biometric}} ! rowspan="2" {{verth|va=middle|SMTP Auth {{r|group=Note|SMTPAUTH}}}} ! rowspan="2" {{verth|va=middle|SSL/TLS<br/>Client Certificate}} ! rowspan="2" {{verth|va=middle|OAUTH}} |-class="sortbottom" ! {{verth|va=middle|LOGIN}} ! {{verth|va=middle|PLAIN}} ! {{verth|va=middle|MD5}} ! {{verth|va=middle|SHA1}} ! {{verth|va=middle|RIPEMD}} |} {{reflist|group=Note|refs= <ref name=AppleMailOAuth>Minimum Mac OS version 10.11. Minimum iOS version 11.</ref> <ref name=APOP>Description: {{IETF RFC|1734}}</ref> <ref name=HMAC>Description: {{IETF RFC|2195}}</ref> <!-- <ref name=MailCRAM>[http://docs.info.apple.com/article.html?artnum=120103 10.1.3 Apple adds SSL and CRAM-MD5 support to Mail]</ref> <ref name=MailNTML>[http://www.apple.com/macosx/features/mail/ Apple supports NTLM v2 in Mail as of 10.4 release]</ref> --> <ref name=SMTPAUTH>Description: {{IETF RFC|2554}}</ref> <ref name=TheBat>Professional Edition.</ref> <ref name=WindowsMailOAuth>Windows 10 required.</ref> <ref name=Zimbra>[http://www.zimbra.com/desktop7/help/en_US/Zimbra_Mail_Help.htm#Getting_Started/Zimbra_User_Help.htm Zimbra Desktop supports SMTP auth, not sure about collaboration suite]</ref> }} ===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 {{r|group=Note|OCSP}} ! rowspan="2" | CRL {{r|group=Note|CRL}} |- ! SSL ! TLS {{r|group=Note|IMAPPOP}} ! SSL ! TLS {{r|group=Note|IMAPPOP}} ! SSL ! TLS {{r|group=Note|SMTPTLS}} ! SSL ! TLS ! SSL ! TLS |- ! {{rh}} | [[Alpine (email client)|Alpine]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Apple Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Becky!|Becky! Internet Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Canary Mail]] | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Citadel/UX|Citadel]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Claws Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} |- ! {{rh2}} | [[Courier (email client)|Courier]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Elm (email client)|Elm]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[eM Client]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{yes}} |- ! {{rh}} | [[EmailTray]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} |- ! {{rh2}} | [[Eudora (email client)|Eudora]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Evolution (software)|Evolution]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{no}} | {{no}} |- ! {{rh}} | [[Gnus]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[GroupWise]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Hiri (email client)|Hiri]] | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Scribe Mail|i.Scribe / InScribe]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{dunno}} | {{no}} | {{no}} |- ! {{rh}} | [[IBM Lotus Notes]] | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh}} | [[KMail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mailpile]] | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Microsoft Entourage]] | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{Yes}} | {{dunno}} | {{Yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Microsoft Office Outlook]] | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Mozilla Mail & Newsgroups]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mozilla Thunderbird]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Mulberry (email client)|Mulberry]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mutt (email client)|Mutt]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no|1.5.15}} | {{no|1.5.15}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger 9]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[MH Message Handling System|nmh / MH]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | Opera Mail | {{yes}} | {{partial}} {{r|group=Note|M2STLS}} | {{yes}} | {{partial}} {{r|group=Note|M2STLS}} | {{yes}} | {{partial}} {{r|group=Note|M2STLS}} | {{yes}} | {{no}} | {{n/a}} | {{n/a}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Outlook Express]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Pegasus Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pine (email client)|Pine]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pocomail]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[RoundCube]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[SeaMonkey]] Mail & Newsgroups | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} |- ! {{rh}} | [[SquirrelMail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Sylpheed]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[The Bat!]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{yes}} {{r|group=Note|TBCSP}} | {{yes}} {{r|group=Note|TBCSP}} |- ! {{rh}} | [[Trojitá]] | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} (system) | {{yes}} (system) |- ! {{rh2}} | [[Turnpike (software)|Turnpike]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Live Mail]] | {{yes}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Mail]] | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[YAM (Yet Another Mailer)|YAM]] | {{yes}} | {{yes}} | {{no}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Zimbra]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |-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 {{r|group=Note|OCSP}} ! rowspan="2" | CRL {{r|group=Note|CRL}} |-class="sortbottom" ! SSL ! TLS {{r|group=Note|IMAPPOP}} ! SSL ! TLS {{r|group=Note|IMAPPOP}} ! SSL ! TLS {{r|group=Note|SMTPTLS}} ! SSL ! TLS ! SSL ! TLS |} {{reflist|group=Note|refs= <ref name=SMTPTLS>Description: {{IETF RFC|2487}}</ref> <ref name=IMAPPOP>Description: {{IETF RFC|2595}}</ref> <ref name=M2STLS>Opera Mail does not support STARTTLS command on special ports, like 995 for pop3 connection</ref> <ref name=OCSP>[[Online Certificate Status Protocol]] - Description: {{IETF RFC|2560}}</ref> <ref name=CRL>[[Certificate revocation list]] - Description: {{IETF RFC|3280}}</ref> <ref name=TBCSP>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.</ref> }}
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