Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 8 Postage Assessment After Verification 8-1 Program Overview Mailers pay postage due, including discounts for F..." /> Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 8 Postage Assessment After Verification 8-1 Program Overview Mailers pay postage due, including discounts for F..." />