Mailer ID The Mailer Identifier (MID) is a field within the Intelligent Mail barcode that is used to identify mailers. MIDs are assigned by the USPS® to a Mail Owner, Mailing Agent or other service providers …

Feb 1, 2021 · Complete the following application to request a Mailer Identifier (MID) for use in the Intelligent Mail® container barcode, Intelligent Mail® tray barcode, or Intelligent Mail® barcode.

The Postal Service will issue a Mailer Identifier (MID) to a mailer for use in the Intelligent Mail® container barcode, Intelligent Mail® tray barcode, Intelligent Mail® barcode or Intelligent Mail® package barcode.

Aug 1, 2013 · This document provides an overview of how to acquire nine-digit Mailer Identifiers (MIDs) and/or Customer Registration IDs (CRIDs), which are used to identify and track Full-Service mailings.

Aug 12, 2024 · The USPS ® Customer Registration ID (CRID) is a unique number that identifies a specific business location involved in a mailing. In order to submit electronic documentation (and …

Mar 2, 2019 · It is normally assigned when a Mail Owner or Mailing Agent registers online with the Postal Service through the Business Customer Gateway. The Mailer ID (MID) is a six-digit or nine …

Feb 1, 2021 · Mailer Identifier (MID) Application Process The Postal Service will issue a Mailer Identifier (MID) to mail owners and mailing agents for use in the Intelligent Mail® container barcode, Intelligent …

Aug 29, 2025 · A mailer ID is a 9-digit number that is required when using Electronic Return Receipt (ERR). To get a Mailer ID from USPS, visit the USPS Business Customer Gateway Mailer ID page. A …