When sending mail internationally, it is important that your letter or parcel be properly addressed. Below are some guidelines to ensure that your mail arrives at its destination:
It is recommended that you print your delivery addresses in all uppercase letters. If possible, addresses should have no more than five lines.
The full address should be typed or legibly written in English - using Roman letters and Arabic numeral - on only one side of the item. An address in a foreign language is permitted if the names of the city, province, and country are also indicated in English.
The last line of the address block area must include only the complete country name (no abbreviations) written in uppercase letters.
Foreign postal codes, if used, should be placed on the line above the destination country. Some countries prefer that the postal code follow the name, while others prefer that it precede the city or town name. For example:
LINE 1: NAME OF ADDRESSEE
LINE 2: STREET ADDRESS OR POST OFFICE BOX NUMBER LINE 3: CITY/TOWN, OTHER PRINCIPAL SUBDIVISION & POSTAL CODE
LINE 4: COUNTRY NAME
As a precaution, senders should place a card showing the names and addresses of the sender and addressee inside parcels.
Using a return address on all mail is strongly recommended. Your name and address, including ZIP Code and country of origin, should be shown in the upper left corner of the address side on all mail.
Restrictions for International Mail
Some items are prohibited from being mailed internationally by the either the country of origin, the destination country, or both. The United States Postal Service provides online information regarding non-mailable domestic items and the individual country prohibitions, restrictions and limitations.