Pick up at the downtown branch of the U.S. Post Office directly by the Contractor or through courier service paid for by the contractor, at least twice each working day, all real property tax payments remitted through the mail and addressed. The County may also deliver to the Contractor once each working day of each collection period, real property tax payments remitted through the mail that are not held at the downtown branch of the U.S. Post Office. The Contractor shall forward to the lock box through the Contractor’s courier service, which shall be paid for by the Contractor, any mail the County delivers to the Contractor.