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Mailafar is a mail server designed for use in difficult communication environments providing a full set of Internet email protocols, web mail, web admin, dial-in and wireless LAN access control. It will run on Linux, FreeBSD and Windows.
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!
Blue HttpMail is a library that connects to HTTPMail servers (such as hotmail.com) and a proxy that allows POP3, IMAP and SMTP access to those servers. Blue HttpMail is being developed using the open source library Blue http://bluelib.sourceforge.net
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
Manta mail is a alpha version of a client e-mail based on the win32 API. This mail client offers the possibility to send and receive e-mails and to visualize the subjects on the mail server. This last option is not activated yet.
tuproxy is a RFC1939-compliant POP3 proxyserver.
It is developed to fill the gap of a freely available POP3 proxy for Windows, but it is easily ported to other systems.
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.
FiPPS is a simple POP3 proxyserver for Windows which scans mail headers with regular expressions for spam/mailworms and deletes the mails without downloading them.
A mailgate-server, acting as a gateway between private networks of a company and Internet. The working scheme is simple: (internal mailbox)<-->(external Internet mailboxes). Uses POP3 protocol. Its work is gonna be completely transparent to the end users.
WinNT HTTPMail->POP3 service. HotPOP3 is a Windows NT service, written in C++, which acts as a proxy between an HTTPMail server (MSN Hotmail) and any POP3 email client.