A system of producing files containing information about printed mailpieces comprising a plurality of folder inserters (22, 24, 26) each having a reading device for extracting at least a job ID and a mailpiece ID, the system comprising at least: a processing node (32, 34, 36) adapted to check the job ID and mailpiece ID from the printed mailpiece and to check out a relevant job against locally held rules; a storage node (38) connected to the processing node and adapted to store the job ID and mailpiece ID sent by the processing node; and an interface node (40) connected to the storage node and adapted to import and export the files.