Abuela,
As you are soon to be an Ex-Pat down here, it is better for me to show you how to link in to previous posts written on particular subjects. DR1 members who can answer each & every question put on to this board, may not always be around when you need the answer quickly!
Go to top of tis page, click on the box that has ;search' written in it & where the drop down box says 'Search Forums' put in key words that are likely to retrieve the answers to the question you have - in this case "Business Mail", 'FedEx', 'UPS', or even 'Mail Forwarding'. You will then get a LOAD of posts where these words appear. Click on them in turn until you find the specific answer you require. (I found about 213 posts for the question Business Mail)
If the answers don't give you the DIRECT information you require (&/or links to where you MIGHT find the information for yourself) then go into the "Advanced Search" facility & do a further check. Over the nine years or so DR1 has been giving helpful information, 99% of questions asked here have already been answered - we are here most days for the rest yet to come, but cannot guarrantee being around in the timescales required! ~ Grahame.