Logically speaking YES.
CIC might do 3 things; and close the file from their side:
1) Send the AOR e-mail to your e-mail id.
2) Send the AOR by post
3) Send (electronically) the docs to local CHC office for furthe take over.
And now, an e-mail takes not more than 5 minutes, even if it has to hop over multiple networks; while a post might take upto 5 weeks to reach you.
Coming to your 2nd question, one cannot rule out the possibility. However I donot have a remedy; other than you asking/posting a letter to them to check-n-correct your e-mail id.
Seniors can pour in their views!