We all are in Canada so it seems I don't need to send any documents via mail.I had similar situation, I responded to their second email and got the PR portal link in few hours after that.
But I had a two step process, as per first email, I also had send a package for my family since they were outside Canada but I didn’t send any package for myself because I was in Canada.
Hope this helps! Good luck!
Thanks for your response.
I responded to them on Friday but didn't get the portal link yet.