There is disclosed a printer control system and method for abstracting the data flow to a printer, or other device, and for using the abstracted information for controlling additional processes with respect to the printer. In one embodiment, the abstracted information is used to print envelope information, such as addressee and/or a postage indicia. The postage indicia can be either generated from the abstracted data or the indicia itself can be abstracted from the data stream. In another embodiment, the process to be controlled is as downline process, such as a folding operation or the printing of information related to the original printed document.