I'm trying to find a way to programtically send out an email, that doesn't depend on some front-end or admin behavior. Ideally, this email would be sent when the order status is changed to 'processing'. From what I gather, there isn't an event I can use for this, nor can an email be sent using the API. Does anyone know of a way to do this, or some kind of work-around that will result in basically this type of behavior? I found this event: checkout_onepage_controller_success_action. I'm not sure how it works. It seems to fire off when the order success page is loaded, which wouldn't work in my case.