Mailer Identifier (MID) Application
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 information provided will not be disclosed outside the Postal Service.
November 09, 2026
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Changelog
3/8/18: Updated reference from RIBBS to PostalPro.