Sending International Mail & Packages
Learn how to send letters and packages internationally. USPS® can help you address international mail, fill out customs forms, find out what you may send to Canada and other countries, and tell you where you can drop off your shipment. Preparing your package and mailing it properly helps it arrive on time and saves you money.
For mail and packages sent domestically, see Sending Mail and Sending Packages.
ALERT: USPS can no longer accept or deliver international mail to several countries due to COVID-19 service impacts. See all countries with temporary service and guaranteed-delivery suspensions. Read More
Weight, Size, & Shape Requirements
Quickly see the standard sizes for international postcards, envelopes, flats, and packages.
Expand AllShape | Size Requirements | Additional Fees | |
---|---|---|---|
Envelopes |
Must be rectangular to qualify for letter prices. |
|
None |
Large Envelopes (Flats) |
Must be rectangular, flexible, and uniformly thick to qualify for flat pricing. |
|
Large envelopes that exceed size requirements will be charged the applicable First-Class Package International Service® (small packet) price. |
Postcards |
Postcards must be rectangular to qualify for First-Class Mail® prices. |
|
Oversized postcards will be charged as letters or large envelopes. |
Packages |
If you're not using a USPS-produced Priority Mail International® Box, the total girth (distance around the thickest part) of your package is up to 108″. Learn to Measure Package Girth |
|
None |