If you want ACTION, don't write.
Go and tell the guy what you want.
Some sound advise here from David Ogilivy. We send an email when we would do better to walk around to the person we wish to engage and have a conversation with them or failing that pick up the phone.
In reading this, I made a connection with a statement by Peter Block that struck me when I read it at the time.
Connection -- We must establish a personal connection with each other.
Connection before content. Without relatedness, no work can occur.
It's basically the same idea, we need to engage people and build a relationship with them before we get down to the nitty-gritty. The best way to do this is face to face.