Abstract: A file disposition review system analyzes multiple productivity platforms to generate an upcoming disposition report identifying data files that have reached a disposition review age associated with a file management label. A cross-platform manual review (CPMR) portal enables concurrent examination of file property data for data files identified in the upcoming disposition report. The CPMR portal further enables the disposition manager to simultaneously examine file property data corresponding to the data files identified in the upcoming disposition report and to issue disposition instructions. Exemplary disposition instructions may cause the multiple productivity platforms to permanently delete the identified data files without their underlying file content ever being transferred and/or copied from the particular productivity platforms that individual ones of the identified data files correspond to.