Open Source C Email Software
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C Email Software
View 286 business solutionsBrowse 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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All-in-One IT Monitoring - No More Blind SpotsTired of switching between different tools and missing critical alerts? PRTG brings everything together, monitoring your entire IT infrastructure from a single, intuitive interface. Whether it’s servers, switches, printers, or cloud services, you get instant visibility and clear notifications - no technical jargon, no clutter. Set up in minutes, PRTG helps you prevent downtime, reduce stress, and prove your value to your company. Focus on your job, not on chasing issues. Try PRTG and experience true IT peace of mind.
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Fully managed relational database service for MySQL, PostgreSQL, and SQL ServerCloud SQL manages your databases so you don't have to, so your business can run without disruption. It automates all your backups, replication, patches, encryption, and storage capacity increases to give your applications the reliability, scalability, and security they need.
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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
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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. -
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MailCleaner
Anti Spam SMTP Gateway
MailCleaner is no longer maintained. It will return soon in another form. [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,...) You can install now MailCleaner within the following virtual environments: qcow2 (KVM, Proxmox, OpenStack, Xen) ova (OVA, VMware ESXi, VMware Workstation, Fusion) vhd (Asure, VirtualPC) vhdx (Hyper-V) AMI (Amazon) Dedicate a server to MailCleaner, and you will have a working professional mail filter in le -
Secure User Management, Made Simple | FronteggFrontegg powers modern businesses with a user management platform that’s fast to deploy and built to scale. Embed SSO, multi-tenancy, and a customer-facing admin portal using robust SDKs and APIs – no complex setup required. Designed for the Product-Led Growth era, it simplifies setup, secures your users, and frees your team to innovate. From startups to enterprises, Frontegg delivers enterprise-grade tools at zero cost to start. Kick off today.
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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,
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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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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.
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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.
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Patch Management and Vulnerability Remediation Software | Action1Action1 reinvents patching with an infinitely scalable, highly secure, cloud-native platform configurable in 5 minutes — it just works and is always free for the first 100 endpoints, with no functional limits. Featuring unified OS and third-party patching with peer-to-peer patch distribution and real-time vulnerability assessment with no VPN needed, it enables autonomous endpoint management that preempts ransomware and security risks, all while eliminating costly routine labor. Trusted by thousands of enterprises managing millions of endpoints globally, Action1 is certified for SOC 2 and ISO 27001.
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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.
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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.
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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 :-)
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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. -
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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
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NOTE: dkim-milter has been replaced by OpenDKIM, available at http://opendkim.org/ dkim-milter consists of two parts: A milter-based application (dkim-filter) which plugs in to Sendmail to provide DomainKeys Identified Mail service, and a library (libdkim) which can be used to build DKIM-compliant applications or MTAs.
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opendmarc
Open source DMARC implementation
This is an open source implementation of the draft DMARC specification. -
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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 -
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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.
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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.
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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.
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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.
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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.
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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