Actually my oath ceremony was at 11am while yours was at 1pm, I think. I'm in North York. It was a large envelope. No idea when it was delivered as I was not at home.
I think you won't receive a response from this email probably. I have another email address which the probability of response is higher:
CIT-SCARBOROUGH@cic.gc.ca
Wow, I've just received a reply to the email I sent on Sunday regarding my request to schedule the oath ceremony. They said I've been scheduled on July 17 11 am for a virtual ceremony