A method for producing and printing a franking label that can be applied onto a mailpiece and for incorporating data into the franking label, in the case of which a network node as external entry point into an application provides a data service, which is performed in a POP server of a service provider, wherein a printing of the franking label is carried out by means of a communication between a user client and the POP server, wherein the method comprises the following steps: - generating entries for the mailpiece to be sent by a customer on a website provided by the POP server; - producing a data set for the franking label in a document database comprising the entries of the customer as form data; - providing the franking label to be printed with a PDF envelope, which is designed as an intelligent document for controlling the printing of the franking label in communication with a license service, and embedding or inserting, respectively, a unique document ID into the intelligent document on the one hand and also into the document database on the other hand; - wherein the intelligent document includes displayable contents consisting of static contents and dynamic contents, wherein the dynamic contents comprise the form data and the static data layout information for the design of the franking label; - wherein a program module is incorporated into the intelligent document, and the program module is configured to produce displayable information of a result of a checking step or of an additional checking step for checking the presence of a condition within the intelligent document; - wherein the intelligent document identified with the document ID is transmitted as empty form with form fields for the form data from the POP server via a network to a user client for printing; - wherein, after the intelligent document with initially empty form fields is opened, it is initially checked successively by means of checking steps, whether a network connection exists between user client and POP server, whether the document ID is valid and whether the franking label has not already been printed; - wherein, with the exception of valid codes for the printing, the form data from the document database are incorporated into the intelligent document after successful execution of the checking steps; - wherein the valid franking label is printed in the case of a postage print, - wherein the codes, which are valid for this purpose, are retrieved from the POP server after pressing a corresponding button; and - wherein, in the case of a first printing of the franking label, a message is transmitted from the user client to the POP server, the printing is logged in the POP server on the basis of the message and the button is faded out or is disabled, respectively. - generating entries for the mailpiece to be sent by a customer on a website provided by the POP server; - producing a data set for the franking label in a document database comprising the entries of the customer as form data; - providing the franking label to be printed with a PDF envelope, which is designed as an intelligent document for controlling the printing of the franking label in communication with a license service, and embedding or inserting, respectively, a unique document ID into the intelligent document on the one hand and also into the document database on the other hand; - wherein the intelligent document includes displayable contents consisting of static contents and dynamic contents, wherein the dynamic contents comprise the form data and the static data layout information for the design of the franking label; - wherein a program module is incorporated into the intelligent document, and the program module is configured to produce displayable information of a result of a checking step or of an additional checking step for checking the presence of a condition within the intelligent document; - wherein the intelligent document identified with the document ID is transmitted as empty form with form fields for the form data from the POP server via a network to a user client for printing; - wherein, after the intelligent document with initially empty form fields is opened, it is initially checked successively by means of checking steps, whether a network connection exists between user client and POP server, whether the document ID is valid and whether the franking label has not already been printed; - wherein, with the exception of valid codes for the printing, the form data from the document database are incorporated into the intelligent document after successful execution of the checking steps; - wherein the valid franking label is printed in the case of a postage print, - wherein the codes, which are valid for this purpose, are retrieved from the POP server after pressing a corresponding button; and - wherein, in the case of a first printing of the franking label, a message is transmitted from the user client to the POP server, the printing is logged in the POP server on the basis of the message and the button is faded out or is disabled, respectively.