Mail Transfer Agent

Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. Individual components can be... Platforms: *nix

Junk Mail Buffering Agent is a tool for preventing delivery of email until the sender has confirmed their address. Junk Mail Buffering Agent can be used in conjunction with a spam filter to prevent delivery of spammy-looking email unless the sender is confirmed as valid. jmba is designed to... Platforms: *nix

flap is a mail user agent written in pure Java. Its main distinctive feature is mounting message folders (like POP3 or IMAP) into a virtual folder tree, just like on Unix. Other features: macros language (w/ BeanShell) and extensive filter rules. Platforms: Windows, Mac, Linux

esmtp is a user configurable relay-only Mail Transfer Agent (MTA) with a sendmail compatible syntax. It's based on libESMTP supporting the AUTH (including the CRAM-MD5 and NTLM SASL mechanisms) and the StartTLS SMTP extensions. Features These are the esmtp features: fully sendmail command... Platforms: *nix

SMTPGuard is a tool which controls the flow of email traversing an MTA (Mail Transfer Agent). It is designed to be used on an SMTP server for incoming mail, and currently supports postfix. SMTPGuard was originally created to meet the needs of Internet Service Providers (ISPs). ISPs typically... Platforms: *nix

PyEximon is a GNOME monitor/manager for the popular unix Mail Transfer Agent, Exim. Its written entirely in Python and will run anywhere that Exim will.. Platforms: *nix

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. Exim is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general. There is a... Platforms: *nix

etPan is a console mail user agent based on libEtPan! libEtPan ! is a mail purpose library. Its a library that handles mail at low-level: MAP/NNTP/POP3/SMTP over TCP/IP and SSL/TCP/IP, mbox/MH/maildir, message / MIME parser.. Platforms: *nix

Nail is a mail user agent derived from Berkeley Mail. It provides the functionality of the System V and POSIX mailx commands. Additional features include support for MIME, IMAP (including caching and disconnected use), POP3, SMTP, S/MIME, international character sets, maildir folders, message... Platforms: *nix

Spruce is an X11 mail user agent (commonly known as an email client) written with the Gtk+ widget set. It is extremely small and fast and has all the common features of an usual user. Spruce supports MIME (Multipurpose Internet Mail Extensions), an Internet Standard for representing multipart... Platforms: *nix

Postilion is a mail user agent based upon the popular TkRat program. The main changes to TkRat are in the user interface portion, so all of the underlying functionality of TkRat remains. This includes MIME support, Virtual folders, PGP support, support for unix mail files, MH folders, POP and... Platforms: *nix

Net::DNS::Sendmail is a Simple Mail Transfer Mail Client with MX lookup. Which will basically act as a primitive sendmail MTA. SYNOPSIS use Net::DNS::Sendmail; # Constructors $smtp = Net::DNS::Sendmail->new(); $smtp->to("john@gmail.com, mary@yahoo.com, goliath@hotmail.com");... Platforms: *nix

smtptools is a collection of tools to send or receive mails with the simple mail transfer protocol. maildirblast may be used to send some or all messages from a maildir to a preconfigured relay host or the official mail exchanger hosts of the recipient addresses. maildirblasts functions... Platforms: *nix

Spruce is an X11 mail user agent (commonly known as an email client) written with the Gtk widget set. It is geared towards being extremely small and fast, supporting all the common features that users want or need without sacrificing usability or functionality. Spruce's basic feature set... Platforms: *nix, C/C++, BSD

Manitou-Mail is an open source database-driven mail user-agent and associated utilities. Manitou-Mail project provides a framework and programs for storing, exposing, and managing mail as organized data in a PostgreSQL database. It can be viewed as a versatile alternative to an imap-aware client... Platforms: *nix

Reply-o-Matic is a highly configurable and secure auto-reply software, to be used in conjunction with any Mail Delivery/Transfer Agent or local delivery agent. Reply-o-Matic provides an easy, uniform way to autoreply to email messages. Whats New in This Release: - Adding new flag (-e),... Platforms: *nix

maildrop is the mail filter/mail delivery agent thats used by the Courier Mail Server. You do not need to download maildrop from here if you already have Courier installed. This is a standalone build of the maildrop mail filter that can be used with other mail servers. maildrop is a filter for... Platforms: *nix

AMaViS is a script that interfaces a mail transport agent (MTA) with virusscanners. Platforms: Windows, Mac, Linux

Manitou-Mail is an open source database-driven Mail User-Agent.Its user interface differs from other mail programs in that it's connected directly to your own mail database, rather than to your ISP or company's servers through the IMAP/POP3 and SMTP protocols. The benefits are: Seamless... Platforms: *nix

libESMTP is an SMTP client which manages posting (or submission of) electronic mail via a preconfigured Mail Transport Agent (MTA). libESMTP library may be used as part of a Mail User Agent (MUA) or other program that must be able to post electronic mail but where mail functionality is not that... Platforms: *nix