Can I use a USPS Priority Mail box to ship internationally?
Since May 14th, 2007, priority boxes can be used to ship internationally. The confusion exists because the old boxes say “domestic use only” and there many of the older boxes floating around. Disregard the warning and use it. You might want to call 1-800-ASKUSPS and order some new boxes, free, which will bear the new label “for domestic and international use’ if you ship frequently.
