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.

  • Manage your entire team in one app Icon
    Manage your entire team in one app

    With Connecteam you can manage every aspect of your business on the go, no workstation needed.

    Connecteam is an award-winning all-in-one employee management solution for daily operations, communications, and human resource management.
  • High-performance Open Source API Gateway Icon
    High-performance Open Source API Gateway

    KrakenD is a stateless, distributed, high-performance API Gateway that helps you effortlessly adopt microservices

    KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance.
  • 1
    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.
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    Downloads: 8 This Week
    Last Update:
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  • 2
    Draconis is a suite with several Internet Programs for the ATARI platform. It contains clients and drivers for a sucessful internet access.
    Downloads: 6 This Week
    Last Update:
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  • 3
    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: 5 This Week
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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: 2 This Week
    Last Update:
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  • AI-based, Comprehensive Service Management for Businesses and IT Providers Icon
    AI-based, Comprehensive Service Management for Businesses and IT Providers

    Modular solutions for change management, asset management and more

    ChangeGear provides IT staff with the functions required to manage everything from ticketing to incident, change and asset management and more. ChangeGear includes a virtual agent, self-service portals and AI-based features to support analyst and end user productivity.
  • 5
    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: 2 This Week
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  • 6
    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
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  • 7
    oserp - stands for OpenSource Emailer Replaces Pine. First goal - replace pine with an open souce work-alike using perl. Second - add an SQL backend to Mail::Box, and thus to oserp. Third - Port to C++, using GNU MailUtils as the backend.
    Downloads: 1 This Week
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  • 8
    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: 1 This Week
    Last Update:
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  • 9
    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.
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    Downloads: 1 This Week
    Last Update:
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  • Component Content Management System for Software Documentation Icon
    Component Content Management System for Software Documentation

    Great tool for serious technical writers

    Paligo is an end-to-end Component Content Management System (CCMS) solution for technical documentation, policies and procedures, knowledge management, and more.
  • 10
    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
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  • 11
    cross platform pop3/smtp and imap mail reader.
    Downloads: 0 This Week
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  • 12
    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
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  • 13
    elmutt - mutt with elm features
    Downloads: 0 This Week
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  • 14
    Errors Hippo is a BBS offline-reader with support for the Hippo packet format. It features a messagebase and a (hopefully) easy-to-use interface.
    Downloads: 0 This Week
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  • 15
    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: 0 This Week
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  • 16
    Portable opensource e-mail client and Personal Information Manager written for the Unices and Linux. Our goal is to support various mail servers including Exchange Server, POP3, IMAP4, etc., eventually having the functionality of MS Outlook.
    Downloads: 0 This Week
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  • 17
    HTML Viewer/ Composer Project for Mobile Device
    Downloads: 0 This Week
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  • 18
    IDTrans is developing b2b technologies. The primary aspects of the project are secure transmission libraries, a key server, and a application to demonstrate the use of the libraries.
    Downloads: 0 This Week
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  • 19
    MeMail is a no-nonsense, fast, and reliable email client who's main feature is that it is built in a modular fashion, and displays as such on the screen. This allows full control over what is displayed and where.
    Downloads: 0 This Week
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  • 20
    An email client written in Java, C, and C++ which not only allows standard pop/smpt/imap access, but also integrated access to Yahoo!, Hotmail, Lycos, and many others. This is all done without any additional services (such as pop forwarding).
    Downloads: 0 This Week
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  • 21
    Hey Everyone! Nirvana has moved to http://sourceforge.net/projects/nirvana It isn't here anymore.
    Downloads: 0 This Week
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  • 22
    Null Webmail is a simple yet powerful POP3/SMTP Webmail CGI written in C. It's small, fast, complete, and a breeze to install and use.
    Downloads: 0 This Week
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  • 23
    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: 0 This Week
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  • 24
    Rupicapra is (going to bee) a console (newt) application for reading email. It is using the libetpan mail engine, so it will support IMPO, POP and may local email connections.
    Downloads: 0 This Week
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  • 25
    Small SMTP wrapper designed to be used in chroot-ed environment as a sendmail command-line tool replacement. e.g. warpper can be used by php ( by function mail ) instead of using SMTP client written in php
    Downloads: 0 This Week
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