View source for Royal Mail Mailmark

== 4-state Mailmark barcode ==
A 4-state Mailmark barcode is a non-industry standard, 4-state barcode similar in appearance (but not content or method of producing) to the existing [[Royal Mail 4-State]] or CBC option used by Retail & Network Access services. It has defined data content, which is compliant with this Mailmark barcode specification.

There are 2 types of 4-state Mailmark barcodes available:

* Type L - encodes 26 characters and is intended for machine-readable Low Sort and Unsorted Retail and Access 70 services
* Type C - encodes 22 characters and is intended for consolidated machine-readable Low Sort and Unsorted Retail and Access 70 services


[[File:Mailmark4state.png‎]]