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Comparison of email clients
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===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. {{sort-under}} {| class="wikitable sortable sort-under sticky-header-multi" |- ! rowspan="2" | Client ! rowspan="2" {{verth|va=middle|[[HTML email]]}} ! rowspan="2" {{verth|va=middle|[[UTF-8]] support}} ! rowspan="2" {{verth|va=middle|Image blocking}} ! colspan="2" | [[email spam|Junk]] filtering ! rowspan="2" {{verth|va=middle|[[Phishing]] filtering}} ! rowspan="2" {{verth|va=middle|Thread view}} ! rowspan="2" {{verth|va=middle|Conversation view}} ! colspan="2" | [[Pretty Good Privacy|PGP]] support ! colspan="4" | [[S/MIME]] support |- ! local ! server- side ! inline ! PGP/MIME or OpenPGP ! protocol ! [[OCSP]] ! [[Certificate revocation list|CRL]] ! certificates on tokens,<br/>smartcards support |- ! {{rh}} | [[Alpine (email client)|Alpine]] | {{partial|Read only}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Apple Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{no}} |- ! {{rh}} | [[Becky!|Becky! Internet Mail]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Canary Mail]] | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Citadel/UX|Citadel]] | {{yes}} | {{yes}} | {{no}} | {{yes}} {{r|group=Note|CITADELspam}} | {{dunno}} | {{dunno}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Claws Mail]] | {{partial|Read-only}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Courier (email client)|Courier]] | {{yes}} | {{no}} | {{no}} | {{yes}} | {{yes}} | {{dunno}} | {{no}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Elm (email client)|Elm]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[eM Client]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{yes}} |- ! {{rh}} | [[EmailTray]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh2}} | [[Eudora (email client)|Eudora]] | {{yes}} | {{no}} | {{yes}} | {{included|Pro only}} | {{included|Pro only}} | {{dunno}} | {{yes}} | {{No}} | {{yes}} {{r|group=Note|EUDORAPGP}} | {{yes}} {{r|group=Note|EUDORAPGP}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Evolution (software)|Evolution]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Gnus]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} |- ! {{rh}} | [[GroupWise]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Hiri (email client)|Hiri]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Scribe Mail|i.Scribe / InScribe]] | {{partial|Read-only}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[HCL Notes]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|NotesThread}} | {{dunno}} | {{yes}} | {{yes}} <br />''(4.1.2+)'' | {{yes}} | {{yes}}<ref>{{Cite web|url=http://publib-b.boulder.ibm.com/lotus/c2359840.nsf/b3266a3c17f9bb7085256b870069c0a9/9b7f328aa2eacd9385257361004fd8a4?OpenDocument|title=HCL Product Documentation}}</ref> | {{yes}} | {{yes}} |- ! {{rh}} | [[KMail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} <br />''(with GPG)'' | {{yes}} <br />''(1.5+, with GPGME)'' | {{yes}} | {{yes}} | {{yes}} | {{dunno}} |- ! {{rh2}} | [[Mailbird]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh}} | [[Mailpile]] | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Microsoft Entourage]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{Yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{Yes}} |- ! {{rh}} | [[Microsoft Office Outlook]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} (2010+)<ref>{{Cite web |url=http://www.howtogeek.com/howto/17937/sort-your-emails-by-conversation-in-outlook-2010/ |title=Sort Your Emails by Conversation in Outlook 2010 - How-To Geek |access-date=2011-04-12 |archive-date=2011-06-25 |archive-url=https://web.archive.org/web/20110625114031/http://www.howtogeek.com/howto/17937/sort-your-emails-by-conversation-in-outlook-2010 |url-status=dead }}</ref> | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} |- ! {{rh2}} | [[Mozilla Mail & Newsgroups]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mozilla Thunderbird]] | {{yes}} | {{yes}} {{r|group=Note|MTBUTF8}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|MTB15}} | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|MTBPGP}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} |- ! {{rh2}} | [[Mulberry (email client)|Mulberry]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} {{r|group=Note|MulberryEncryption}} | {{yes}} {{r|group=Note|MulberryEncryption}} | {{yes}} {{r|group=Note|MulberryEncryption}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Mutt (email client)|Mutt]] | {{partial|Read-only}} | {{yes}} | style="background: #ffffdd;" | Yes<br />''(no support for images)'' | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} (with [[GPGME]]) | {{dunno}} |- ! {{rh2}} | [[Netscape Messenger]] | {{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}} |- ! {{rh}} | [[MH Message Handling System|nmh / MH]] | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | Opera Mail | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} | {{no}} |- ! {{rh2}} | [[Outlook Express]] | {{yes}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} {{r|group=Note|OEPGP}} | {{no}} {{r|group=Note|OEPGPMIME}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Pegasus Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | style="background: #ffffdd;" | Yes<br />''(sending is broken)'' | {{dunno}} | {{no}} | {{no}} | {{no}} |- ! {{rh2}} | [[Pine (email client)|Pine]] | {{partial|Read-only}} | {{yes}} | {{yes}} | {{no}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} <br />''(with Pine Privacy Guard)'' | {{no}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Pocomail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[RoundCube]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} (depends on antivirus) | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[SeaMonkey]] Mail & Newsgroups | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} {{r|group=Note|MTBPGP}} | {{yes}} {{r|group=Note|MTBPGP}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} |- ! {{rh}} | [[SquirrelMail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} (depends on antivirus) | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Sylpheed]] | {{no}} {{r|group=Note|SYLHTML}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{dunno}} | {{yes}} | {{dunno}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[The Bat!]] | {{yes}} | {{yes}} | {{yes}} {{r|group=Note|TBIMAGE}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{yes}} | {{yes}} | {{partial}} {{r|group=Note|TBCRL}} | {{partial}} {{r|group=Note|TBCRL}} | {{yes}} {{r|group=Note|TBCRL}} |- ! {{rh}} | [[Trojitá]] | {{partial|Read only}} | {{yes}} | {{yes}} | {{no}} | {{yes}} | {{no}} | {{yes}} | {{yes}} | {{no}} | {{partial|Read only}} | {{partial|Read only}} | {{partial|Read only}} | {{partial|Read only}} | {{partial|Read only}} |- ! {{rh2}} | [[Turnpike (software)|Turnpike]] | {{partial|Read-only}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Live Mail]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh2}} | [[Windows Mail]] | {{Yes}} | {{yes}} | {{dunno}} | {{Yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[YAM (Yet Another Mailer)|YAM]] | {{dunno}} | {{yes}} | {{dunno}} | {{yes}} | {{dunno}} | {{dunno}} | {{no}} | {{no}} | {{yes}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} | {{dunno}} |- ! {{rh}} | [[Zimbra]] | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} | {{yes}} (depends on antivirus) | {{yes}} | {{dunno}} | {{dunno}} | {{No}} | {{dunno}} | {{dunno}} | {{dunno}} | |-class="sortbottom" ! rowspan="2" | Client ! rowspan="2" {{verth|va=middle|HTML email}} ! rowspan="2" {{verth|va=middle|[[UTF-8]] support}} ! rowspan="2" {{verth|va=middle|Image blocking}} ! colspan="2" | [[email spam|Junk]] filtering ! rowspan="2" {{verth|va=middle|[[Phishing]] filtering}} ! rowspan="2" {{verth|va=middle|Thread view}} ! rowspan="2" {{verth|va=middle|Conversation view}} ! colspan="2" | [[Pretty Good Privacy|PGP]] support ! colspan="4" | [[S/MIME]] support |-class="sortbottom" ! local ! server- side ! inline ! PGP/MIME or OpenPGP ! protocol ! [[OCSP]] ! [[Certificate revocation list|CRL]] ! certificates on tokens,<br/>smartcards support |} {{reflist|group=Note|refs= {{#tag:ref|The Bat! supports two modes of S/MIME: Internal Implementation and via [[Microsoft CryptoAPI]].<ref>{{cite web |url=http://www.ritlabs.com/en/products/thebat/features.php |title=List of features of The Bat! email client}}</ref> CRLs and OCSP are only supported in the latter mode. Internal implementation only supports Aladdin eToken Pro or Rainbow iKey1000<ref>{{cite web |url=http://www.ritlabs.com/en/products/securebat/ |title=The Bat! with Hardware Tokens}}</ref> 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.|name=TBCRL|group=Note}} <ref name=CITADELspam>Citadel plugs Mail into [[SpamAssassin]]</ref> <ref name=EUDORAPGP>Eudora requires a plugin to handle PGP.</ref> <ref name=MTBUTF8>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) [https://bugzilla.mozilla.org/show_bug.cgi?id=653342]</ref> <ref name=MTB15>Mozilla Thunderbird adds this feature in Thunderbird 1.5.0.4</ref> <ref name=MTBPGP>Using PGP in Thunderbird before version 78 requires [[Enigmail]].</ref> <ref name=MulberryEncryption>PGP/GPG and S/MIME support require a free (included) plugin.</ref> <ref name=NotesThread>First release 6.0 (September 2003), [http://www-128.ibm.com/developerworks/lotus/library/notes-designer7-features/] enhancements introduced in release 7.0 (August 2005)</ref> <ref name=OEPGP>Using PGP in Outlook Express requires a plugin.</ref> <ref name=OEPGPMIME>Outlook Express [[Outlook Express#Handling of PGP.2FMIME signed messages|does not display]] PGP/MIME signed messages.</ref> <ref name=SYLHTML>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.</ref> <ref name=TBIMAGE>The Bat is not able to display inline images.</ref> <!-- Unused notes <ref name=MAILPGP>Mail requires [https://gpgtools.org/] GPGMail plugin.</ref> --> }}
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