A pro forma invoice is defined as the sales bill sent to the buyer prior to either shipping or delivery of goods. This invoice like other invoices reflects the purchase made and other important information regarding the purchase. It also mentions the weight of items being shipped and the total cost of shipment. The expected day and time of delivery are also mentioned on the invoice unless any unforeseen circumstances occur. The date on which the goods will be shipped for delivery is also mentioned. The name and address of the person to whom the goods are to be delivered are also mentioned in the invoice.