Check out, if solution provided by Ed Rauh (zevrona livroha) is right for you:

How do I avoid the annoying Outlook dialog sending Outlook automation or MAPI email? FAQ #8155

>I am trying to use foxpro combined with office 2000 on windows 2000. I can get foxpro to work with word and excel no problem. Now comes the problem, Outlook 2000. I have found the commands, but apparently the security updates to Outlook 2000 now prevent it from sending messages via a third party program (foxpro), even though it is Microsoft, without some user intervension. This is a real pain, especially when trying to wright monitoring software. Anybody know a work around? Any help is appriciated. Thanks
>Mike Burns