however the security within Outlook prevents an unattended approach. A popup appears which asks if it is ok to send the email. Are there any parameters that can be passed to Outlook by the Foxpro app that will preclude or circumvent this popup?

In addition to Outlook Redemption, to which you were referred by Mike, you may want to tak a look at this:

http://www.contextmagic.com/express-clickyes/

It comes with VFP sample code and the price is right - free.