Browse free open source C Email Clients and projects below. Use the toggles on the left to filter open source C Email Clients by OS, license, language, programming language, and project status.

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  • 1
    Downloads: 15 This Week
    Last Update:
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  • 2
    OpenChange Project

    OpenChange Project

    Microsoft Exchange compatible server and client libraries

    OpenChange is a portable Open Source implementation of Microsoft Exchange server and Exchange protocols. It provides a complete solution to interoperate with Microsoft Outlook clients or Microsoft Exchange servers. OpenChange client-side library is used in existing messaging clients and is the solution in new projects to communicate natively with Microsoft Exchange and Exchange-compatible servers. OpenChange server is a transparent Microsoft Exchange server replacement using native Exchange protocols and does not require any plugin installation in Outlook.
    Downloads: 4 This Week
    Last Update:
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  • 3
    YAM - Yet Another Mailer

    YAM - Yet Another Mailer

    YAM - The E-mail client for Amiga computers

    YAM (short for Yet Another Mailer) is a commonly used MIME-compliant Internet mailer written for AmigaOS computers. It supports POP3, SMTP, TLSv1/SSLv3, multiple users, PGP, hierarchical folders, filters, a configurable GUI, an ARexx interface and more...
    Downloads: 9 This Week
    Last Update:
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  • 4
    Claws Mail
    Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader. Supports POP3, APOP, IMAP, SMTP, SMTP AUTH, NNTP, LDAP, multiple accounts, spell-checking, addressbook, SSL, GPG, filtering, i18n, & more. It is further extended by plugins.
    Downloads: 8 This Week
    Last Update:
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  • 5
    Virtual Access Open Source Project
    The Virtual Access Foundation's Virtual Access Open Source (VAOS) is a well-established win32 mail news and collaborative conferencing tool. Modified BSD license. Please go to our homepage http://www.virtual-access.org for more information and support.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 6
    RFC 2425 defines a MIME Content-Type for Directory Information. This library contains necessary methods to parse information blocks arranged in such a manner.
    Downloads: 4 This Week
    Last Update:
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  • 7
    Elmo is a feature-rich console mail client for UN*X power users. It integrates functionality commonly realised by separate pieces of software in other mailers.
    Downloads: 3 This Week
    Last Update:
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  • 8
    data & video-conferencing, one shared whiteboard, send text messages (IM), transfer files(FTP),collaborate in real time,email capablities,Plays and stores dvd,cd and Mp3. Web-based Internet directory,Remote Desktop Share,File sharing program & browser
    Downloads: 2 This Week
    Last Update:
    See Project
  • 9
    The venerable MH message handling system: a command-line based mail user agent for UNIX/Linux developed at the RAND Corporation and the University of California, Irvine.
    Downloads: 2 This Week
    Last Update:
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  • 10
    Ghost In The Mail is a very basic mail client for Linux, written in C, for GTK. It supports attached files. The user can specify the SMTP server, the sender's e-mail, and the name.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    Heirloom mailx (formerly known as "nail") is intended provide the functionality of the POSIX mailx command with additional support for MIME messages, IMAP (including caching), POP3, SMTP, S/MIME, message threading/sorting, scoring, and filtering.
    Downloads: 1 This Week
    Last Update:
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  • 12
    Webmail client for call center agents. Designed to efficiently manage and report on a large number of emails to a small number of email addresses. Specifically designed with webforms in mind where one email address may receive over 1000 emails per day.
    Downloads: 1 This Week
    Last Update:
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  • 13
    Geedot aims to be a lightweight, fully (and only) HTML 4.01 and CSS compliant and functional web browser for X. It uses the gdtoolkit widget set which is very fast and lightweight - yet also infinitely and easily expandable.
    Downloads: 1 This Week
    Last Update:
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  • 14
    This is a Web Mail application written in C. This uses its own users/mailbox system and it allows remote users to create accounts from a WEB form. The accounts are not valid users on the Unix system. It works like a Hotmail or Yahoo service.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    Note! Code and issues are maintained at https://github.com/sba1/simplemail. SimpleMail is a simple to use but powerful mail client. It supports the SMTP, POP3 and IMAP (in a simple form) protocols. Furthermore, among much other features, it is capable of showing HTML mails and can identify spam mails by using a Bayesian filter.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    Sylpheed and Sylpheed-claws as native Win32 applications. Build with MSVC 6.0 and Gtk+ libraries. Features: Use same local mailbox under Win and Linux (MH format), Multithreaded, internal HTML-parser, Filters, Colors, Newsreader, GPG, POP3, IMAP, SSL, .
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    After one year without development of the XForms based Unix email client XFMail, the coding has started again. The GTK is supposed to be the toolkit of choice and so we will take XFMail's core, restructure it, and port it to the Gimp ToolKit.
    Downloads: 0 This Week
    Last Update:
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  • 18
    AUC for Education is an GPLed intranet system designed for use in a K-12 setting that provides a web-based environment for students and teachers to interact via "Interactive Classrooms" and other innovative features.
    Downloads: 0 This Week
    Last Update:
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  • 19
    CSCMail is an X/Gtk based MUA. It supports the POP3 protocal and can also read mailspool files/directories. It supports multiple accounts, filters, GPG, MIME, Spellchecking, HTML Mail (view only) and a host of other features.
    Downloads: 0 This Week
    Last Update:
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  • 20
    This program is a minimal SMTP client that takes an email message body and passes it on to a SMTP server (default is the MTA on the local host). Since it is completely self-supporting, it is especially suitable for use in restricted environments.
    Downloads: 0 This Week
    Last Update:
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  • 21
    Edbrowse is a comprehensive editor, browser, and email client that provides access to the net through a command line interface, appropriate for speech or braille. It also supports scripting, to interact with the net in the background, or in batch mode.
    Downloads: 0 This Week
    Last Update:
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  • 22
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    A PHP Webmail, utilizing persistant IMAP connections and XHTML 1.1. Since the name is rather long, the preferred nickname is "d-mail".
    Downloads: 0 This Week
    Last Update:
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  • 24
    Draconis is a suite with several Internet Programs for the ATARI platform. It contains clients and drivers for a sucessful internet access.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    elmutt - mutt with elm features
    Downloads: 0 This Week
    Last Update:
    See Project
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