102-192.85—Who must report to GSA annually?
Large agencies (all agencies that spend in excess of $1 million each fiscal year in total payments to mail service providers) must provide a Mail Management Report to GSA by January 15th of each year. If your agency is a cabinet-level or independent agency, the agency mail manager must compile all offices (or components) and submit one report for the department or agency as a whole (e.g., the Department of Defense or the Department of Health and Human Services).