Thanks Dave,
I agree with your comment: As having simply the "@" symbol as a the starting in an email to activate a script. I actually have a few different symbols in my key phrases that I support. That said, I never give out these special key phrases to anyone, including other administrators.
In regards to editing the rule so it only applies from a nominated group of addresses, you are correct. Currently only my tmobile account email activates the scripts. Thinking back, maybe I should of added some of these thoughts to the main article. I am glad you brought them up, I am sure they will help folks who are looking to implement this in some way to their own system.
I am glad you enjoyed the article, I sure hope it helps folks who really want another tool that will win back some of their personal time, which is the real reason I decided to write the article.
Thanks again,
Anthony Loera