Inschi wrote:

The thing is that I get also other messages with the words "alarm" or
"warning" - but only when the word "test" is together with the other 2
words I would like to do a resend...

Maybe in future versions of outlook this will be possible, who knows.

Or do you know a 3rd party product that will do the job?

Perhaps one of the tools listed here can do that:
http://www.slipstick.com/addins/content_control.htm
--
Brian Tillman