International Mail
The International Mail Rate is approximately $1.55 per ounce. You are responsible for clearly marking the piece "Air Mail" and keeping it separate from domestic mail.
If you have a Parcel Post which must go out International Mail (air or surface), please check with your Mail Services office, because it may be necessary to fill out a Customs Declaration Form and a Customs Declaration Slip (available in mail services).
Overnight International Mail: Please provide Mail Services with the description and value of the contents of the package for customs purposes.