Whenever we look online at a new purchase (or pre-owned) - (Truck or RV) we always gather what info is available. Then we chose a sales contact and send a very brief email asking for more info.
Brief, gets one representative to email you back, and s/he knows you are the contact for a sale if it happens. You get the attention of one person that knows the sale is hers/his if you buy. The worst way, in my mind, is to ask in a long, detailed message to a random salesman ... direct contact to a real name first is always more fruitful for both parties.