The first Open-Source high-performance MTA for high-volume senders
KumoMTA is an Open-Source, enterprise-grade email message transfer agent (MTA) software for sending high-volume, business-critical emails. KumoMTA is typically chosen by high-volume email users looking to replace PowerMTA, Momentum, or traditional Open Source MTAs.
KumoMTA offers high-performance message relay to the tune of millions of messages per hour per server, combined with extreme flexibility and configurability through its use of a Lua scripting engine for configuration and message management.
MeTA1 is a message transfer agent that has been designed with these main topics in minds:
* Security
* Reliability
* Efficiency
* Configurability
* Extendibility
MeTA1 consists of five main modules of which only one runs as root:
* mcp: the main control program is similar to inetd(8): it starts all other MeTA1 modules and watches over their
execution. mcp runs as root in order to bind to port 25 and to change the uid of the processes it starts...
Hedwig is an open source IMAP, SMTP, POP3 server written in Java, designed with ease of installation and configuration in mind. Hedwig enables storage of mail message headers in a relational database(MySQL or Oracle) and mail messages in a file system.
Visit http://hwmail.sourceforge.net/ for more information.
Java program that creates an SMTP message and sends it off. It can be used to test SMTP functionality as well as security. This test SMTP at the application level. Requires Java 6.
spamsink is a fake (honey pot) SMTP server written in PERL for dumping SPAMs. A fake relay is under develompent (version 0.3), parsing the message body to trigger web bugs is planned.
Simple multi-threaded replacement for System.web.mail. Its is fast/stable because it only implements 1 smtp method - (200+ msg/sec P4-3GHZ). It is mainly designed for message injection to another SMTP server for end delivery. Written in 100% managed C#.
A little Java-Server-Software (like a SMTP-proxy), which accepts incoming SMTP-Messages. The subject will be parsed for @ or + symbols, which should control time shifted sending. If not contained, the message will be forwarded to parent smtp.
Quick Mail Project is Mail Server with Web mail. The project is independed platform support designed Using Java ,C, PHP ,MySQL database . Its support RFC SMTP protocol , RFC Internet Message, Multi domains, forward, block, spam bulk and a lot more.
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
SPAMGrinderProxy is an SMTP and POP3 spam filter that runs as a service on Windows XP/2K. It works with any server or client, scanning each message for SPAM and flagging those that are. It can interoperate with SpamAssassin or use its own filters.
A small, fast, secure, anti-spam SMTP mail server (MTA). Delivery to mbox files and Maildirs supported. qwik-smtpd supports RBL, relay checking, raw/custom message handlers, and more. Custom authentication via checkpassword and a qmail-compatible configu
JEM is an SMTP server with pluggable components that let you
process email in any way you like. It can also extend beyond
emails into generalised message processing (like JMS) and can
even generate its own messages based on a Cron-like facility.