Ok, after a bunch of digging I found: SendTo mail recipient

Fairly intriguing, but also fairly useless in VB6.

So this got me to: Sending a file to "Mail Recipient" using sendmail.dll

To use that code (which does the same thing as far as I can see) you will probably need his OLELIB.TLB - OLE interfaces & functions v1.7, which you can get at Visual Basic 6