Join Date: Nov 2000
Location: Nashville -Past DL Plat, FO, WN-CP, various hotel programs
Programs: DL-MM, AA, SW w/companion,HiltonDiamond, Hyatt PLat, IHF Plat, Miles and Points Seeker
Posts: 11,405
Yes, the code appears to be unique. Wife and I each got that email, and they are different codes. No idea if they are tied to the user or now.
It does indeed give a discount, off the CURRENT fare.
I have an upcoming trip during that time frame. Using the code it came up at 16,000 or so points. Without the code it is 20,400 pts.