Home » Other » What does a Firm Mailing Book for Accountable Mail Look Like? What does a Firm Mailing Book for Accountable Mail Look Like? admin 14/09/2017 Other No Comments PS Form 3877 is used as Firm Mailing Book for Accountable Mail that looks like this: Tweet Pin It Related Posts What does an Optional Procedure Mailing System Application Look Like? What Does a Funds Transaction Report (FTR) Look Like? USPS Restricted Delivery, Cost, and Form Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Notify me of follow-up comments by email. Notify me of new posts by email.