You should put your Canadian business address  as your sender address on the invoice and Chit Chats' U.S. address on the shipping label

You can choose to ship with USPS postage however, most clients prefer purchasing Amazon's UPS postage through their Amazon accounts because of their competitive pricing. Whether you use USPS or Amazon's UPS service it is important that you select the correct U.S. zip code for your region as the "Ship From" zip code. Our delivery fee is the same regardless of the carrier used.

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