I used email for a Mazda when I was cross shopping. They gave me a really shady price, every rebate used, horrid financing. You should use MSRPs as the highest end of the spectrum.
And go to different places, if you don't like it, walk. This netted us the deal we were initially looking for on a CR-V, but we ended up liking the Fusion better. They'll call you back, too.
Simplicity is the ultimate sophistication.