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Comparison of email clients
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===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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