This is a Sources Sought notice to identify Indian Small Business Economic Enterprises (ISBEEs) and Indian Economic Enterprises (IEEs) capable of providing postage funding services for the Blackfeet Service Unit (BFSU) mailroom. The contract includes a 12-month base period and four 12-month option periods, with performance at the BFSU mailroom in Browning, Montana. No specific budget amount is mentioned. The work involves funding postage via Pitney Bowes, transferring funds to USPS, updating meter credits, and maintaining records. Interested parties must demonstrate their IEE status and capability to meet the 51% earnings requirement for Indian enterprises.