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

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    The All-in-One Commerce Platform for Businesses - Shopify

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  • 1
    Open source DKIM library, MTA filter implementation and associated tools.
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    Downloads: 102 This Week
    Last Update:
    See Project
  • 2
    Untangle
    Untangle is a Linux-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, bandwidth control, captive portal, VPN, firewall, and more. Visit http://untangle.com
    Downloads: 26 This Week
    Last Update:
    See Project
  • 3
    Liberté Linux

    Liberté Linux

    Liberté Linux: Mission-critical stealth communication

    Liberté Linux is a secure, lightweight, and easy to use Gentoo-based Linux distribution intended as a communication aid in hostile environments. Liberté installs on a USB key, and boots on any computer or laptop.
    Downloads: 18 This Week
    Last Update:
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  • 4
    P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.
    Downloads: 25 This Week
    Last Update:
    See Project
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  • 5
    Steganography program. Crypture encrypts (1024 bit key) and stores files in Windows bitmap files. Only 6 KB, with no install required. Fills all bits with noise, to slip by standard steganalysis methods. Data header is encrypted and scattered as well.
    Downloads: 24 This Week
    Last Update:
    See Project
  • 6
    MailCleaner

    MailCleaner

    Anti Spam SMTP Gateway

    MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project https://github.com/SpamTagger [antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready. MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet. It includes a complete GNU/Linux OS and a graphical web interface for user and administrative access. It comes in the form of virtual machine templates.. - fully compatible with any SMTP mail server (Exchange, Zimbra, O365,...)
    Downloads: 5 This Week
    Last Update:
    See Project
  • 7
    This project is a C++ library which allows incorporating DKIM into an existing MTA or other application. It provides full support for signing, verifying, and SSP. It is compliant with RFC 4871.
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    Downloads: 6 This Week
    Last Update:
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  • 8
    A general purpose set of tools, C library and CPAN modules to help DomainKeys developers. The goal is that these tools and library can be easily adopted by all MTAs, LDAs and possibly MUAs. This project is about conforming to the DomainKeys standard,
    Downloads: 6 This Week
    Last Update:
    See Project
  • 9
    Mixmaster is an anonymous remailer. Remailers provide protection against traffic analysis and allow sending electronic mail anonymously or pseudonymously. Mixmaster consists of both client and server installations.
    Downloads: 4 This Week
    Last Update:
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  • Comet Backup - Fast, Secure Backup Software for MSPs Icon
    Comet Backup - Fast, Secure Backup Software for MSPs

    Fast, Secure Backup Software for Businesses and IT Providers

    Comet is a flexible backup platform, giving you total control over your backup environment and storage destinations.
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  • 10
    dk-milter consists of two parts: A milter-based application (dk-filter) which plugs in to Sendmail to provide DomainKeys service, and a library (libdk) which can be used to build DomainKeys-compliant applications or MTAs. See the home page for details.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 11

    opendmarc

    Open source DMARC implementation

    This is an open source implementation of the draft DMARC specification.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    siggen is a cool email signature generator for encrypted ansi c (confused), brainf*ck, ... signatures. Use it in combination with vi(m), emacs, mutt, pine, or what ever. (tested on Solaris, Linux and Windoze). Optimized only for geeks :-)
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    AMaViS is a script that interfaces a mail transport agent (MTA) with virus scanners.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    ClamMail is POP3 email proxy for Windows with integrated ClamAV antivirus engine. ClamMail is an Windows antivirus that protects your PC from viruses transferred via mail. Works with Outlook,Thunderbird,Eudora and many others using popular POP3 protocol
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    A sendmail milter for amavisd-new which use AM.PDP protocol.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    Clam AntiVirus

    Clam AntiVirus

    The free cross-platform antivirus software tool-kit

    ALL DOWNLOADS HAVE MIGRATED TO HTTPS://WWW.CLAMAV.NET Clam AntiVirus is a GPL cross platform antivirus toolkit. The main purpose of this software is the integration with mail servers. It provides a flexible and scalable multi-threaded daemon, a command line scanner, and an up-to-date virus database. Github Repo is here: https://github.com/Cisco-Talos/clamav-devel
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    ClamSMTP is an SMTP filter that allows you to check for viruses using the ClamAV anti-virus software. It accepts SMTP connections and forwards the SMTP commands and responses to another SMTP server. Works well with Postfix.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Método y Sistema de voto electrónico vía e-mail utilizando par de claves asimétricas PGPl.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    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
    Last Update:
    See Project
  • 20
    Keychain Framework is an Objective C Foundation-based framework for accessing Keychain and Security services under MacOS X. It provides convenience wrappers around the CDSA library included with MacOS X, facilities for manipulating keychains, and more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    The LDAP proxy is designed to be the part of the email encryption infrastructure which would simplify finding and using public encryption keys contained in X.509 public certificates.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Mailcash if a plugin for Apple's Mail program that provides hashcash support - that is, verification and generation of hashcash stamps. Refer to <http://www.hashcash.org/> for more information about Hashcash.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Mailfilter

    Mailfilter

    Remote anti spam utility

    Mailfilter is a flexible utility for UNIX (-like) operating systems to get rid of unwanted spam mails, before having to go through the trouble of downloading them into the local computer. It offers support for one or many POP accounts.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    A perl server that accepts plain text mails for users and sends them out encrypted. Could be used in a company so that your accountant can be in contact with the salerperson in a secure way, without you needing to tell the accountant everything about PGP
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    This project is named PSCM, an acronym for POSTFIX, Spamassassin, ClamAV, Mailscanner. It is an integrated RPM package featuring a SMTP mail server, with spam filtering and virus scanning capabilities, designed for easy installation and usage.
    Downloads: 0 This Week
    Last Update:
    See Project
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