In the past I have done several projects related to e-mail (POP3/SMTP/IMAP4). One of the problems (at least in my Company) is that there are never good test servers available. So that's why I decided to create this simple POP3 server, which doesn?t take many resources and supports most of the standard POP3 commands.
Key Features:
Supports most RFC1939 POP3 commands
Supports multiple POP3 user accounts
Integration with Microsoft SMTP server
Multi threaded
It's free!