This quick SMTP tester saves you the trouble of configuring an SMTP script or setting up an email profile when testing or troubleshooting SMTP services.

This might come in handy while setting up a multi-function (MFC) printer/scanner/copier which scans to email or when making sure you have the right information handy to set up email alerts on the DVR or NVR for your security system.

This simple applet was built in Python and updated to have a basic to-the-point user interface where you can easily enter the necessary information including username, password, SMTP Server address, SMTP Port, and whether or not to use TLS.

When using Google’s gmail service (with or without Google Workplace) or Microsoft 365 Outlook, be sure to set an app password! Many other email services will require this as well.