What are the five categories of International Mail?

The five categories of International Mail provided in the correct answer encompass specialized services that the Postal Service offers for sending items across international borders. Each category is tailored to meet different needs regarding speed, delivery guarantees, and types of items being sent.

Global Express Guaranteed is a premium service that provides fast international shipping with a money-back guarantee, ensuring delivery times usually within one to three business days to select international destinations. Priority Mail Express International is another expedited service, offering fast delivery with some tracking capabilities, typically within three to five business days, although it does not carry a money-back guarantee.

Priority Mail International allows for sending items more affordably while still offering delivery tracking, and transit times generally range from six to ten business days, depending on the destination. First-Class Mail International covers a wider range of item types for sending letters and small packages, permitting economical options without extensive tracking. Finally, First-Class Package International Service is specifically designed for lightweight parcels, providing an economical choice for shipping international packages that weigh up to four pounds.

This categorization is vital for understanding how to best utilize postal services based on delivery speed, cost, and service features, which makes this answer the most accurate and relevant regarding international mailing options.