To provide for free mailing privileges for personal correspondence and parcels sent to members of the Armed Forces serving on active duty in Iraq, Afghanistan, or other designated hostile fire areas.

Supply Our Soldiers Act of 2017 This bill directs the Department of Defense to provide for a program under which postal benefits are provided to a member of the Armed Forces who is on active duty and who is either: (1) serving in Iraq, Afghanistan, or another hostile fire area designated as eligible for hazardous duty pay; or (2) hospitalized at a military medical facility as a result of such service. The postal benefits shall be in the form of coupons, vouchers, or other evidence of credit to use for postal-free mailings. The benefits program shall apply during FY2016-FY2021.