Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 4-2.1 Advanced and Optional Preparations 4-2.1.1 Accept Misshipped Containers Option Mailers can choose to allo..." /> Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 4-2.1 Advanced and Optional Preparations 4-2.1.1 Accept Misshipped Containers Option Mailers can choose to allo..." />