Pass incoming mail to a script

I need to pass all mail directed to a specific address throught a my script.

With qmail is simple... I create an alias:

echo "| /home/macro/parsemail.sh " > .qmail-parsemail

And all mail directed to parsemail@my.domain.com goes directly into my script.
Using Zimbra how could I do this?

is this what you need? Add Alias To Script - Zimbra :: Wiki

Oh Yessssssssssssssssssssssssssssss

Thanks