The Panamanian mail system is not reliable. There are two excellent companies dedicated receiving and sending your mail as well as bringing stuff you have ordered over the internet etc: Air Box Express and Mail Boxes Etc. Airbox Express delivers your mail and packages directly to your home. Mail Boxes receives them at the offices where you can go pick them up. They’ll give your own PO Box address in Miami where you can have things sent to and they’ll bring your mail from Miami to Panama for a starting fee of about $25 a month. These mail services are invaluable for life in Panama. For more info see Air Box Express.