smtp4dev is a simple SMTP server useful for testing software that needs to send email. Windows 7/Vista/XP/2003/2010 compatible dummy SMTP server. Sits in the system tray and does not deliver the received messages. The received messages can be quickly viewed, saved and the source/structure inspected. Useful for testing/debugging software that generates email.

The license of this software is Free, you can free download and free use this email server software.