Sendcloud translates the costs for shipping labels, surcharges and other used functionalities into invoices. For more information on how we bill your usage, see this pageThe Invoices API allows you to retrieve a list of your invoices and view their details.You can also download invoices in PDF or CSV format directly from your Sendcloud account, by going to Billing, finding an invoice, and clicking Details.For more information on invoices and their payment, see this page.