You will need to go to your SparkPage while in edit mode and in the upper right corner uncheck the box for " Email me when I receive a comment (on my page, a photo, or blog), SparkGoodie or Trophy" and save changes. Please note, that also stops emails from those other items as well, not just trophies.
"We either make ourselves happy or miserable. The amount of work is the same." Carlos Castaneda
Live Kind. Laugh Often. Love Always.