ArgoSoft Mail Server Pro

ArGoSoft Mail Server is fully functional SMTP/POP3/IMAP/Finger server for Windows, that allows you to turn your PC into an email system.
Its very compact, takes about 1-5 Mb of disk space (depending on the version), does not have any specific memory requirements, and what is the most important - its very easy to use.
Features:
ï¿­ Is completely transparent. Runs as a small icon on your system tray;
ï¿­ Can be loaded with Windows startup;
ï¿­ Supports unlimited number of accounts;
ï¿­ Supports SMTP authentication. Useful to protect your server from unauthorized use;
ï¿­ As we mentioned above, it is fully functional server: it relays the messages directly to Mail exchangers, bypassing your ISP.
ï¿­ Has built-in web interface, which allows users to check mail using any popular web browser from anywhere in the World
ï¿­ Has password protected Administration mode;
ï¿­ Supports distribution lists;
ï¿­ Supports auto responders;
ï¿­ Supports basic filters;
ï¿­ Unlimited message size (there is a limit of 5 Megs for freeware version);
ï¿­ Can listen on single IP address, rather than all addresses available on your computer;
ï¿­ Has built-in web server. It means, the server can be accessed from anywhere in the World, using any popular Web browser: Administrator can control the server, and do the maintenance of users; Users can access their accounts: read and send email, change their own settings;
ï¿­ Web output, generated by server, can be customized;
ï¿­ Finger server can be disabled
ï¿­ Supports IMAP (version with IMAP module);
ï¿­ Has true support of multiple domains - you can create accounts with the same name, which belong to different domains;
ï¿­ Supports multiple IP homes (virtual domains);
ï¿­ Has built in mailing list server;
ï¿­ Has WAP interface;
ï¿­ Allows setup of domain administrators - users who can change domain related information via the Web interface;
ï¿­ Filtering of mail according to IP addresses of server which attempts to relay mail to local users;
ï¿­ ORDB and MAPS support;
ï¿­ Easier specification of IP addresses, which do not require SMTP authentication. Instead of listing addresses, you can specify ranges and masks;
ï¿­ Supports Server Extensions - special external dlls, which can be plugged into the server, and process mail the way the creator of dlls prefers
ï¿­ Ability to verify addresses of senders of arrived messages
ï¿­ Has built in utilities for diagnosing local or remote domains, allows browsing of user mailboxes;
ï¿­ Allows to temporarily disable or enable users, and domain administrators