Courier Mail Server   
http://www.courierms.net

Courier Mail Server is a e-mail server. Compact, easy to configure and usage, multithreaded, contains Web server. It will help you to quickly arrange e-mail exchange in local network and Internet. Major Features: - SMTP and POP3 services - Web server with PHP support (HTTP service) - system service operation mode - support of multiple mail domains - flexible sorting and antispam mail filtering - user and domain aliases - alias-based mailing lists - domain mailboxes and domain forwarding - mailing to fixed servers (smart hosts) - direct mailing to recipient's server (MX delivery) - restricted forwarding of external mail (antirelay) - limited size of sent messages and number of recipients - automatic re-sending of outgoing mail - notification on delivery failure - view of outgoing mail list with delete feature - separation of access rights on client IP addresses - limited number of incoming/outgoing connections - view of connections list with disconnection feature - mail collector from remote mailboxes - scheduler with external application run feature - copying of all passing mail to the certain address - mail processing using external applications (antivirus, antispam) - remote access (RAS dial-up)

Dewqs' SpamProx   
http://www.dewqs.com

Spam Proxy : seamless interface between your email client and your mail server [Outlook Express version]. Technology using Dewqs' Tribes now famous anti spam engine. Black listing, white listing. Multithreaded server. SpamProx is an invisible link between Outlook Express and your POP3 email server. Spam messages are processed, not deleted. Filters the results in your favorite email client.

RelayTest   
http://www.digiarch.org

Relay Test Pro is a tool for network administrators, that allows to test a specified mail server for open relays. It runs series of tests designed to detect open relays and create a detailed report of the findings. The test data can be automatically updated from the web to catch-up with the latest tricks used by spammers. Relay Test Pro is not designed to find vulnerable mail servers - it only scans one server at a time. Key features: Automatic web updates for the test data. Auto and manual test mode. Reference numbering for each test. Real time communication report. Result report with comments.

eeMailer- Alert Notification Sender   
http://www.eemailer.com

Email sender (SMTP server) can be used by 3rd party software programs to send system alert notifications, SMS alerts, e-Commerce, security alerts, direct (bulk) mail, email notifications and alerts eeMailer is compatible with any Windows NT/2000/2003/XP computer. eeMailer installs as a low overhead system service and works totally in the background. Simple to use, simple to setup and reliable.

Email2DB   
http://www.parker-software.com

Email2DB is an email parser and auto responder. It parses email messages and extracts field data to update back end databases and to send auto-response emails and SMS text messages. Email2DB is ideal for any form-based emails such as orders, payments and web site feedback forms etc. Email2DB can read emails from POP3, IMAP and Exchange Servers plus directly from Microsoft Outlook 2003 folders. It also has a built-in mail server allowing emails to be sent directly to it. Email2DB can update any data source available on your PC, including: SQL Server, MySQL, Access plus any ODBC compliant database. Email2DB can also run additional actions in response to emails including: - Run custom reports and save reports to PDF, HTML, RTF, TIF and Excel files. - Save attachments to specific folders. - Send multiple custom emails to any addresses extracted from the original. - Send multiple custom SMS text messages. - Send scheduled email follow up messages on pre-defined dates in the future. - Update Outlook 2003 Contact records. - Post data to a web page. - Run custom actions using the built-in Visual Basic compatible scripting language. The Email2DB Server runs as a service on your PC and does not interfere with the normal email flow.