San Juan - Post Report Question and Answers
How do you send and receive your letters and package mail? Are local postal facilities adequate?
Reliable US postal service. Only weirdness is most houses lack point to point mail service and don't have real addresses. You have to find a local US POst office and buy a "box" or a private mailbox shop. - May 2023
Regular U.S. mail. It is nice because you can order many things from the U.S. but there are times where some items won't be shipped to the island (some appliances or miscellaneous goods). It seems random which items can or can't be shipped so you just have to try. - Jan 2014
Good old regular US Mail. Some stores will not ship here (Target, for example). - Jun 2013