Free smtp pop3 server software for windows

Baby POP3 Server - Simple POP3 server, which doesn?t take many resources and supports most of the standard POP3 commands Baby POP3 Server is a simple POP3 server, which doesn?t need many resources and supports most of the standard POP3 commands.
POP3 Server classes:
- CListenSocket
This socket accepts all incoming connections. When a client connects to the server, CListenSocket accepts the connection and creates a new thread (CClientThread) that will take care of all further communication between the client and the server. After the thread has been created, CListenSocket will return to its waiting state.
- CClientThread
This thread will handle all communication between the client and the server using CControlSocket.
- CControlSocket
This socket class will process all incoming POP3 commands and send back the response to the client. CControlSocket is basically the class where all the good stuff is happening:
Validate user login
Read mail directory and keep track of changes (deleting mail).
When requested, send messages to the client.
- CMonitorThread
This thread monitors the mail drop folder for incoming messages (from the SMTP server). When a new message is dropped into this folder, its header will be checked to determine the receiver. If this receiver has a user account on our server the messages will be copied to his/her mailbox. If the server cant determine the receiver, the messages will be moved to the admin mailbox.
CMonitorThread uses FindFirstChangeNotification to find out if there are any new messages in the mail drop folder. Unfortunately ReadDirectoryChangesW is not available under all versions of Windows(this function tells us exactly what has changed in the specified directory) , so I had to reproduce its functionality by keeping track of the changes myself.
- Configuration:
To make this POP3 server useful you must also have a SMTP server installed. Microsofts SMTP server from ISS will be fine (included with Windows NT/2000/XP). Usually this SMTP will have a mail drop folder were it will drop incoming messages. Microsofts SMTP server uses c:inetpubmailrootdrop by default.
This mail drop folder is the input folder for our POP3 server, so open the Settings dialog and set the mail folder.
The time-out setting lets you specify the time-out value for receiving data. When clients become idle for too long the connection will be closed.
In User Accounts you can Add/Edit and Delete user accounts. The admin account is default and cant be removed.
- TODO:
Implement any missing commands.
Add mailbox locking (so multiple users cant log into the same mailbox).
Add domain checking.
Make lots of money by selling this software instead of giving it away for free...
Features:
- Supports most RFC1939 POP3 commands
- Supports multiple POP3 user accounts
- Integration with Microsoft SMTP server
- Multi threaded
Enhancements:
- Fixed: Timing problem while monitoring Drop folder.

You can have your own Internet Homepage, Mail System,BBS System. iMate Free Web Mail Server is an email fornoncommercial use that supports SMTP, POP3, and HTTP protocols. iMate has a Web server, Mail server, Web mail engine, and contains a WYSWYG HTML editor so anybody can make Web pages or HTML mail. It also informs you whether the receiver read your mail. Functions include email,a bulletin board system, and a home page manager This is for Windows95/98/2000/NT and supports English and Korean.

A C# port of the Java Email Server which is an established email server targeted at small centrally maintained installations CSES is a project to provide the same feature set to the .NET platform. However, in addition to the features of JES, CSES provides individual reusable components that other applications can use to provide email functionality.
The current release of CSES provides the SMTP Server component. This component allows a program to accept incoming emails and process them using user defined logic.
The current release of CSES does not implement a full POP3/SMTP email server. However, these features are expected to be provided in upcoming releases.

Hermes is a basic SMTP/POP3 server with source code. Its free to use. Read the license. Send bug reports or improvement suggestions.

InetServ is a free program which supports many Internet Services like SMTP, POP3, DAYTIME, FINGER, and WHOIS. InetServ is a free, easy-to-use and simple program which supports many Internet Services like SMTP, POP3, DAYTIME, FINGER, and WHOIS.
SMTP stands for simple Mail transport protocol, its for delivery of mails. InetServ cant route. This means: If your hostname is funny.net then you cant send emails to ugly.net via InetServ.
POP3 is for receiving emails. With POP3 you can fetch email from a server. POP3 is secured by a username and a password.
Daytime is a service that simple tells the client the day and the time. InetServ only supports the TCP-Service of DAYTIME.

AfterLogic XMail Server 2.5 Build 33 serves as a POP3/SMTP mail server giving users anti-spam and SSL support. It supports ESMTP, TLS/SSL secure connections, SMTP authentication, account and domain aliasing, anti-spam features (IP-based and e-mail address based),mailing lists, logging, remote administration, Finger protocol, filters, custom mail processing, simultaneous multi-user access to a POP3 mailbox.