The COPR is actually a long form document that you'll receive. I believe all PRs get this, the only difference is we don't the counterfoil (visa attached in our passport). I'm pretty sure this is because we can enter Canada with US passport alone, not all countries are able to do this.
I just got my PPR email. It says US citizens just need to send photocopies of their passports along with photos. What do we get for CoPR then if we don't have a passport stamp? Do they send a form or something? I'm also wondering which mail service everyone used. Thanks!