The proforma invoice is necessary for non European shipments and you can download and fill it here.
Follow these steps to fill in the pro-forma invoice:
Paragraph 1: your full name and your phone number.
Paragraph 2: your full name, your shipping address and your phone number.
The table: fill in DETAILED content of the parcel, indicating the prices for each individual item in euros. (This documented is presented to Spanish customs, so it must indicate detailed information of the content of the parcel. Do not indicate vague information such as: Clothing, electrical devices, samples, etc. You must list each item, quantities and value per item.)
SpainBOX – Mailboxes, shipping of parcels and pallets, international express transport with UPS, DHL, Fedex and TNT Export Import.