Updates to the Mailmark Letters and Large Letters Specification

We are delighted to announce that we are making further improvements to our Mailmark Letters and Large Letters specification to provide greater clarity to supply chain partners and enable posting customers to optimise their investment in mail.  


Mailmark items make up circa 92% of Royal Mail Wholesale volume, with customers using our lowest price service benefitting from the capacity to monitor the progress of their mailings via Mailmark Direct Data. Following feedback from both our operations team and our customers, we reviewed the existing Mailmark specifications, to identify areas requiring further clarity to support the continued efficient processing of mail.


Whilst the majority of the changes are intended to add further clarity to existing Mailmark specification points to enable more effective customer implementation, we are also adding some new specification points aimed at improving the efficient processing of mail.


The full range of changes are summarised in an overview document which you can find here.


User Guide Amendment Notice (number 069) which provides further details of the changes to the Mailmark specification. In line with clause 13.2(b)(ii) of the Access Letters Contract, the changes will come into effect from 1 July 2023.  


If you have any queries regarding the changes please contact your Account Director.