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 who request them.

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 receive Full-Service benefits), customers must have a customer registration ID assigned to their business location. 

The Mailer Scorecard provides a dashboard view of the results of the letter and flat mailing activity with the Postal Service over a calendar month. This view is available to both the mailer who submitted the electronic documentation for the mailing (eDoc submitter) and the mail owner/mail preparer. 

The Electronic Verification System (eVS^®) enables parcel mailers to submit documentation and pay postage by transmitting electronic manifest files to the eVS database.

Intelligent Mail^® for Small Business Mailers (IMsb) is a free online tool which will allow you to produce the presorted Intelligent Mail barcodes (IMb) for your mail pieces, tray labels and submit an electronic postage statement to the acceptance units.