Download of Windows SMTP Server 1.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Commonly, this program's installer has the following filename: SMTPServerGUI.exe.
This free tool was originally developed by WinSMTPServer. This free PC software was developed to work on Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 or Windows 11 and can function on 32-bit systems. The most popular version among Windows SMTP Server users is 1.0. We recommend checking the downloaded files with any free antivirus. The software lies within Internet & Network Tools, more precisely Network Tools.
From the developer:
Since later versions of Windows (e.g. Windows 7) do not include the SMTP store-and-forward client, Windows SMTP Server application project creates a Windows service to offer similar services.
Windows SMTP Server is an easy to use application and is a freeware.
You may want to check out more software, such as Local SMTP Server Pro, Free SMTP Server or Advanced SMTP Server, which might be similar to Windows SMTP Server.