I voted for #3 bc with my business contacts I like for them to know who they are talking to when they respond back. They could have 3 Chris's in their contacts lists and not my company name. Also if they do not get right back to me, I know they are busy. I don't want to alert them, bc they may be with a customer and then they have to fiddle with the phone to stop the alert. If its that important I would call that person and leave a message.