How do I send printed matters?
Show "Printed Matter" or "Imprime" on the upper-left corner of addressed surface. Printed matter should be mailed unsealed. (However, if the mail contains only books or booklets (magazines, brochures, and the like), it can be sent sealed.)
If mailing contents are subject to tax at the addressed country, you need to label or attach the Custom Declaration Form (CN22 or CN23. Available for free at the post office).
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