With the Myusps you can make an account, and you just verify its you at the current address, you type in your address, its fucking awesome because if a vendor doesn't provide tracking like most, you sign up for Myusps, and on your account theres a dashboard, it shows you if there's something heading for your address, like a priority pack, all of em have tracking so it will pop up!! its a fucking awesome feature! no more hoping and guessing if an vendor sent your shit!! everyone needs to be using this!!! it is a relief and helps with my anxiety i swear. and this way no guessing if your pack has arrived, you can see whats up, everyone use this!!
If its a package from a large company like Amazon or shipped using stamps.com it will show up but If the vendor uses plain stamps and a tracking number from a roll it will almost never show up.