The Info post or Infobrief is always a sales letter, which is sent in large numbers. These mass mailings can be addressed or sent as a throw shipments. These two shipping methods are used in direct marketing to address specific target groups quickly and personally. It does not necessarily have to be a letter, documents or data carriers can be sent, as long as it is not sales goods. With the info letter post, the contents of the transmissions must be the same, only the salutation and names can naturally deviate. The info letter becomes the Info post For runs under 10,000 preferred since such a sort of postal code is eliminated, also it is cheaper than a normal letter delivery.