vpopmail provides you an easy way to manage virtual email domains.

Rit script can be used to manipulate mailboxes over IMAP, allowing you to copy and delete mailboxes and their contents.

libsmtp is a C library to send mail via SMTP.

mimetic is an Email library (MIME) written in C++.

Protector is a low maintenance e-mail virus blockade system.

new 2.5.0 - Amavisd is a high-performance and reliable interface between mailer (MTA) and one or more content checkers: virus scanners, and/or Mail::SpamAssassin Perl module.

PowerMail is a redundant and distributed system for receiving and storing electronic mail.

Tool - MIME-Tool application is a mime encoding tool.

ripMIME has a single sole pupose, to extract the attached files out of a MIME package.

senddfbymail is a Perl script (with Web interface) that can download files from the Internet and e-mail them to a certain user.

Active Spam Killer helps you to remove spam messages.

Checkaliases reads a sendmail aliases file and reports problems in it.

mail2thread finds threads in a bunch of mail messages and outputs them in various ways.

mail2clf generates a CLF (Common Logfile Format) file from a bunch of mails.

HLDFilter is a unix based mail filter written in perl to replace procmail and many other mail utilities.

SquirrelMail is a standards-based webmail package written in PHP4.

SMTP/POP3 Email Engine Library is a library of functions providing easy control of the SMTP (Simple Mail Transport Protocol) and POP3 (Post Office 3) protocols.

PhpXmail is a web based management software for the Xmail mail server written in php.

Perl Webmail is a CGI/mod_perl application that interfaces with external POP3 and SMTP services.

Contact Form is a Perl script that allows users to send you email through a web interface.

@Mail can be used as a Webmail interface to an existing mail server.

IP*Works! - COM library optimized for ASP pages and server-side programming.

4AspNet POP3 .NET Component is a powerful, inexpensive, and easy to use component which allows you to download and parse emails from a POP3 server.

Virtual Mail for Postfix helps you to manage virtual pop3/imap domains using Postfix, Courier and PostgreSQL.

Outlook Export class allows for the export of messages, Contacts and notes from Outlook to a ZODB filesystem database.

Form 3.0 - PHPEasy-Form allows you to design forms that are able to send their content through email.

Mail Master is a Web-Based E-Mail Management Software.

IMAP - Courier-IMAP is a fast, scalable, enterprise IMAP server that uses Maildirs.

BS Form allows a visitor to send an e-mail to a specified recepient directly from the site.

Anonymous Mail with Attachment code allows you to send anonymous e-mail with attachment.