As currently frequently shown in various surveys among e-commerce customers, invoice is the most popular payment type with Germans. Invoice is a convenient and safe payment option for your customers. Online shoppers prefer Invoice due to its safety, especially in online shops visited the first time. You first receive the goods or can use a service and pay only after examination ofthe goods or provision of the service. Then the customer has only to pay the invoice via bank transfer and only for goods that are kept, not for returned goods. For e-commerce merchants, many customers expecting this payment type can be lost.