A data packaging system is programmed to modify or otherwise manage a data stream from a data source prior to transmission to an intended recipient by applying an expressible intent regarding the data stream from the recipient in the form of a recipient signature. A data packager can apply a received recipient signature to modify the data stream based on the contents of the data stream. The modifications to the data stream can include prioritization of portions of the data stream identified as being the portions of interest to the recipient based on the signature. The data packager can then prioritize the transmission of these portions while delaying non-prioritized portions of the data stream.