I strongly advise everyone to check their spam folder, I got PPR email on Oct 4 th in my spam folder. My timeline is given below:
AOR - Sept 12, 2017
MP - Sept 14, 2017
IP1 - Sept 28, 2017
IP2 - Oct 1 , 2017
PPR - Oct 4, 2017
Passport mailed: Oct 16, 2017