Clarification of the Default Postcode Option for Mailmark

On 2 January 2024, we launched the supplementary Default Postcode option for our lowest priced Mailmark service.

The Default Postcode solution enables customers to minimise the charges incurred where they are unable to identify the actual postcode for an item and allow customers to optionally enter a non-geographic postcode in the Mailmark barcode (i.e. a default postcode) for a supplementary charge (1.50 pence per Letter or Large Letter and 25.00 pence per General Large Letter).

Following feedback from a customer we are making a change to the Access Letters User Guide to provide further clarity as to when the Default Postcode option may be used.

The contract change notice details the amendments we are making to the Access Letters User Guide in accordance with clause 13.2(b)(ii) of the Access Letters Contract. The changes will come into effect from 29 March 2024.

A useful FAQ can also be found at

If you have any queries please contact your Account Director.