UPS and FedEx also allow you to sign up for similar alerts based on your address so you don't have to necessarily rely on tracking numbers for everything.

It also helps if you are too lazy to bundle up to go outside to check when it’s cold as nuts, but are waiting for something specific. 😁

And if you just never check your mail (I get almost exclusively junk mail, so I check it every week or two. All my bills are autopay, and all communications are paperless when possible).