Identifying Mail Owner and Mail Preparer in Full-Service Electronic Documentation

Full‐Service Requirement: Mailing Agent (By) and Mail Owner (For) information must be identified in the electronic documentation for all Full-Service mailings.  Mail Owner and Mailing Agent data may be provided through a Mailer ID (MID), Customer Registration ID (CRID), Permit Number, or Publication Number.  The USPS recommends providing only one of the fields for any Mail Owner in the mailing.  Read more.