priority mail intl refers to USPS’s international shipping service that guarantees delivery within 6-10 business days to over 180 countries worldwide. Priority Mail International offers affordable rates for packages and includes features like tracking, delivery updates, and customs forms for smooth international delivery. It’s a popular option for e-commerce businesses and individuals sending packages abroad, as it provides a balance between cost and speed. The service also includes free packaging, and rates depend on the weight, size, and destination of the package.