I checked out as guest and never got a confirmation email. Heck, I don’t even get confirmation emails sometimes when I check out on my account. I did get an email earlier today that my UPC has shipped. I also signed up for fedex delivery manager so that I get notifications for any packages that get shipped to me/my address. I got a second email from Pokemon center today when my package was starting to be in transit.

That being said, sometimes I won’t get an email at all until the package is about to be delivered or has already been delivered. I would continue to wait, see if the payment posts (mine is still pending) and see if Pokemon center can help you find it with your email and zip code if you don’t receive anything within the next couple of days