#if needed, add steps to set up your find criteria here
Set error capture [on]
Set error capture [off]
If [ get ( foundcount ) > 0 /* records were found */]
Perform script [//specify your send email script here]
Note: Some may want to comment that all you really need is If [ get (foundcount) ], but ever since the filemaker upgrade from FMP 3 to FMP 4 broke this step in one of my early databases, I've preferred not to use expressions with implied results. Just a preference on my part and I figure it might be a tiny bit easier for some novice FMP users to understand.
Set Error Capture [On]
current script commands
If [Get ( Foundcount ) > 0]
Perform Script[Second Script]
Worked like a charm -- many thanks...