hi everyone, i hope u r all doing ok, i hear some good news arround now

so congratulations for all vjs who r at the end of their journey and i hope that all the other will hear some wonderful news soon any way yesterday i sent a package containing many important documents to my wife in the us, and i sent it throught the express tunisian postal service paying 35$ for that , and unfortunatly i send it using my wife po box address thinking that when it gets to the us it will be delivered through the us postal but it seems that the fedEX will be doing that and that this company doesnt deliver to po box adresses , so im juste hopping that they will use the phone number i wrote on the package to call her, any one knows more about this kind of situations ????????
plz advise us about the exact procedure we should follow to send the I-130 package through us postal, wt kind of services we should use "the express" and if there is any other delivery option we can use to track the package ?