All of Shippo's carriers allow you to print international shipping labels. For orders with international addresses, after you enter the parcel details (type, dimensions, weight) and click “Select shipping rates,” you will be automatically forwarded to the customs declaration form. Once that’s complete, you’ll see a rate list.
Commercial Invoices are also required for most packages being shipped internationally. When printing your label for an international shipment, be sure to print your commercial invoices as well!
On the label creation page, you'll see two buttons - "Download Label" and "Download Commercial Invoice."
For USPS international shipments, you do not need to include a commercial invoice, so you will not see the "Download Commercial Invoice" button. All necessary customs information is included in the label generated by USPS.
USPS First Class International labels will be a single page. Some USPS Priority Mail International labels come with just two pages - the first is the label, which you should apply to the box as normal, and the second is a copy for your records. Some Priority Mail International labels come with 4 pages - the first is the label and should be put on the box, the second and third should be included in a pouch on the outside of the package, and the fourth is for your records.
For FedEx, Canada Post and DHL Express, the commercial invoice is not included with the labels, and you need to click "Download Commercial Invoice" after downloading your label. You need to print 3 copies of the commercial invoice, sign them, and include them in a pouch on the package. DHL Express labels will also include an "Archive Doc," which is sometimes requested by DHL employees, but is not required. Just keep it on hand during drop-off/pick-up in case it's needed!
For international shipments with UPS, the commercial invoice is built into the label itself, so you can also click "Download Label" for UPS.