If you like (and understand how to troubleshoot) Blat, look at the send mail service code in the script vault on this site. With it, any program can create an INI file with the message followed by the INI data. When the Kix code is called (either as needed or running continuously as a system service) all of the message files in the Mail folder are processed and sent.

I have this running on one server in my network. Any app that wants to send mail simply writes the .MSG file there. If the app or user has write access to the folder, they can send mail. That is the only non-mail server in my environment that's allowed to send mail to the SMTP gateway, further improving security.

Glenn
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Actually I am a Rocket Scientist! \:D