You could have downloaded SMTP Test Tool 3.0.0003 from our software library for free. Commonly, this program's installer has the following filenames: SMTP Test Tool.exe and SMTP_TestTool.exe etc.
This free PC program was developed to work on Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 or Windows 11 and is compatible with 32-bit systems. The following version: 3.0 was the most frequently downloaded one by the program users. The program lies within Internet & Network Tools, more precisely Network Tools. This free software was originally produced by SimpleComTools.
From the developer:
Simple Com Tools SMTP Test Tool is an SMTP testing application that provides the ability to initiate and monitor a complete email (SMTP) transaction from any PC. Designed with both end-users and network professionals in mind, SMTP Test Tool can send both authenticated and non-authenticated messages, allowing you to watch the transaction in real-time and capture any potential errors or transaction failures.
You may want to check out more software, such as Microsoft Platform Ready Test Tool, EXFO Compact ToolBox 1 EXpert IP Test Tools or EXFO Mini ToolBox 1 EXpert IPTV Test Tools, which might be similar to SMTP Test Tool.