I ordered mine November 3rd and had my email confirmation November 3rd. About 5 min after I walked out of the dealership I got an email as I was pulling into my neighborhood
Can't say for sure, but by the time I got home from the dealer & ordering, and checked my email later that day, it was there. So, somewhere in the four hour or less window.
Never got one email. Even after I called them and made sure they had my email. During phone call they even sent me a confirmation email but never received one update email. Took a little over 4 months to take delivery. All updates and tracking was done on my part.