Open Source Windows Mail Transfer Agents

E-MailRelay is a simple SMTP proxy and relay MTA, written in C++, for Linux and Windows. As a proxy all messages can be passed through a user-defined program, such as a spam-filter, which can drop, readdress, or edit messages as they pass through.

mailsend is a simple command line program to send mail via SMTP protocol. It can send a piece of alert mail from a program in a networked Windows machine. It's feature-filled, cross-platform, free and open source, and does not use any config file.

hMailServer is a SMTP/POP3/IMAP server for Windows. Data is stored in MySQL/MSSQL database and is easily accessed using the COM library. Project info, trackers and downloads has moved to www.hmailserver.com.

ZMail allows you to send email from anyone, to anyone. You can use ZMail to send fake or anonymous emails. Have fun!

MailArchiva is a powerful, full featured email archiving (email archiver) and compliance solution for mail systems such as Microsoft Exchange. It stores all incoming, outgoing and internal emails for long term storage. A web based user interface is avail

Since later versions of Windows (e.g. Windows 7) do not include the SMTP store-and-forward client, this application project creates a Windows service to offer similar services

OpenSmtp.net is an open source SMTP component written in C#. It does not rely on the .Net Framework System.Web.Mail classes. It also has a web service that allows the sending of email via HTTP.

YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!

acSMTP is a SMTP/POP3/IMAP mail server for Win32. May serve MX hosts and in-LAN mail. Black/white lists for IPs/Emails, RBL spam blocks, DNS Email validation, optional DBMS backend for lists and rules, custom user authorization, AntiVirus API.

Visual Synapse are component wrappers around the Synapse tcp/ip libraries. It wraps a few common internet protocols, like HTTP, UDP, DNS, ICMP, TCP and SMTP to multi-threaded components that can be used with Delphi, Kylix, Freepascal and C++ Builder.

A proxy server for gmail, that enables you to fetch your gmails using IMAP or POP3, and send mails by SMTP via your gmail account.

JMultiSend is a simple and fast solution to send mass emails (Bulk E-mail); it only needs to load the list of addresses, the message (HTML or TXT), the data and then send. It is possible also to manage mailing lists subscribtions simply by emails, to send personalized messages with the user name and to schedule delays up to 24h (86400 secs); all this also from command-line. Since it is developed in Java it is a cross-platform application and does not need installation but needs only the Java Virtual Machine (version 6 or higher) that, in the case, is very easy to download and install.

Pop3/Smtp connector for email server. Using scheduler / multithread download email from POP3 account or act as an SMTP gateway. Filtering via external tools.

jwSMTP, Send email programmatically (C++ code/lib). Linux, BSD, Windows etc. Attachments, Multiple recipients, Cc/Bcc recipients supported. MX lookup or send to an SMTP server direct. LOGIN and PLAIN authentication now supported. Html or plain text forma

mail2rss is a .NET web service that checks your mailbox on demand and returns an RSS feed containing the unread messages in the mailbox. Supported protocols include POP3 and some public web based email systems like Hotmail, MSN, Gmail and Yahoo.

Check given IP/Host presence in 106 RBLs. Now, you don\'t have to check a lot www sites, just run this script in console.

AUBGMS est un notificateur de Gmail pour Méditel lors de la réception des nouveaux messages sur Gmail

This anonymous emailer script written in PHP is a free, opensource project designed to send EMails from anyone to anyone, with additional details such as Reply-To ,an anti-spam CAPTCHA and a WYSIWYG.

Aggilus is a true messaging server, with email, IRC, newsgroups, instant messaging, and much more. Do not apply to join, discuss in the forums, you may be invited. Programming must be done in Visual Basic, and all functionality must be in COM+.

Anti-Bot Form Mailer is a PHP script that helps webmasters reducing spam received via their contact or support form.

This software shedule to download email from POP3 server and send it to SMTP server.

A SMTP-Proxy that allows authenticated SMTP sessions to traverse, while stopping SMTP sessions from internet worms and SPAM bots. It can also be used transparently so clients need no additional settings, just auth. to their freemail of choice.

API similar to Java-Mail (TM). This API is to be in C# and will be available for the dotNet-aware platforms.

IMAP protocol implementation in C++

This is a PHP class to send mesages through a SMTP server, that allows user auth and send some message types, like plain text or html.