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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
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.
vdpop3d has been designed to be secure, fast and reliable pop3 server. It's easy to configure, supports many authentication features, virtual users (per-domain auth, so the same user can exist in a lot of domains) and is thread based (scalability).
Fwsecvpop3d has been designed to be secure, fast and reliable pop3 server. It's easy to configure, supports many authentication features, virtual users (per-domain auth, so the same user can exist in a lot of domains) and is thread based (scalability).
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
pop3spam is a POP3 client which connects to a POP3 server and deletes
unsolicited mail in-place. It's possible to check for messages that exceed a
certain limit and to scan header lines for special patterns (regular
expressions).
Mailcheck is a simple, command line, configurable tool that allows multiple mailboxes to be checked for the existence of new mail messages. It supports both mbox and maildir-style mailboxes. It also supports remote POP3 and IMAP mailboxes.
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tuproxy is a RFC1939-compliant POP3 proxy server.
It is developed to fill the gap of a freely available POP3 proxy for Windows, but it is easily ported to other systems.
The PigeonAir Project aims at releasing an Open and Free GPL solution to easily build up clustered, scalable and modular email services, targetted to satisfy all ISP needs.
The purpose of this project, is to provide an open source replacement for all of Microsoft Exchange functionality. The product is delivered as an installable system that is fully functional and pre configured for use.
Virtual Qmail - virtual domains management system for qmail. It is designed to be fast, reliable, and easy to use. Includes software allowing users to manage their accounts via WWW.
This is a set of .NET class libraries, designed to use various Internet protocols in a easy-to-use OO matter. So far it contains a POP3 and an IRC (Internet Relay Chat) library.
Heirloom mailx (formerly known as "nail") is intended provide the functionality of the POSIX mailx command with additional support for MIME messages, IMAP (including caching), POP3, SMTP, S/MIME, message threading/sorting, scoring, and filtering.
An advanced qmail distribution based on qmail-sql which has SMTP, SMTPS, POP3, POP3S, IMAP, IMAPS services, a content scanner, spoofing protections, SMTP AUTH support, SMTP-after-POP/IMAP, PHP5 API, SPF support and much more...
hotwayd/hotsmtpd are POP3/SMTP-HTTPMail gateway daemons. The HTTPMail protocol is used by the mail servers Hotmail, Lycos, Spray and MSN. The hotway suite you can receive and send mail via these services using any POP3/SMTP compliant mail reader.
mpop3d is aiming to be a open-source modular POP3 server. Features incredibly powerful configuration management system, designed to be elastic so the administrator could easily achieve precisely what he wants.
This program gives you a new way of capturing and collecting music from radio stations over the Internet. You can listen and record your favorites radios at the same time also this way like to realize audio diffusion using outcast stream protocol.
Cyrus IMAPd is a popular IMAP server that surfaces a rich interface for extending its functionality. The Cyrus IMAPd Utilities project brings together maintenance utilities, graphical front-ends, and API handlers (such as notification daemons).
FLOPP Project is an open POP Proxy. It supports many features, including commands filtering and logging, multiple cascaded proxies, in/out access lists, statistics, etc..