We are all familiar with the saying "Time is money" and thus in terms of the financial operations of each company. In order to earn money, it is necessary to satisfy various properties, and one of them is issuing invoices. For someone to pay us money for a service or product that has been issued, we need to deliver the invoice and deliver it to the address agreed in advance. At a time when technology has entered all areas of business, including finance and invoice delivery, it is not surprising to devise the fastest possible way to deliver invoices, which is also legally approved. Email has long since replaced letters, and so have the invoices. Until now, invoices had been sent by mail, in paper form, and postal services were most often used to deliver them. On average, the delivery of the invoice was waited for several days, for the confirmation of receipt as much. Today, an electronic service has been designed that greatly facilitates this process and offers additional options in addition to sending invoices. The invoice is converted to digital form so instead of in a few days, the invoice is now at the desired address in just a few seconds. In addition, an acknowledgment of receipt and status of the invoice is obtained, the invoice is automatically archived in electronic form and can be accessed at any time. This way of delivering invoices removes paper from everyday use and creates great savings, both for companies and the economy. It is much more environmentally friendly and offers companies increased market competitiveness by speeding up business processes.