SF Ecomm, prevent emails

 void Application_Start(object sender, EventArgs e) {
    Bootstrapper.Initialized += new EventHandler<Telerik.Sitefinity.Data.ExecutedEventArgs>(Bootstrapper_Initialized);
}

void Bootstrapper_Initialized(object sender, Telerik.Sitefinity.Data.ExecutedEventArgs e) {
    if (e.CommandName == "Bootstrapped") {
        EcommerceEvents.PreProcessOrder += new EcommerceEvents.OnPreProcessOrder(EcommerceEvents_PreProcessOrder);
    }
}

OrderValidator EcommerceEvents_PreProcessOrder(Guid cartOrderId, CheckoutState checkoutState, Customer customer) {
    //HOPEFULLY - do not send an email!
    var ordMgr = OrdersManager.GetManager();
    checkoutState.BillingEmail = "";
    checkoutState.ShippingEmail = "";
    ordMgr.SaveChanges();

    //Return TRUE
    var validator = new OrderValidator();
    validator.IsOrderValid = true;
    return validator;
}