This Technical Report specifies methods for measuring the quality of a re-forwarding service of domestic addressed mail that is collected, processed and delivered by postal service operators. As a European Standard or technical specification it relates to the measurement of services given to household and business customers who receive mail at their homes, their post office boxes, or at their office premises and have contracted their national Postal Operator (PO) to re-forward their mail for a defined stretch of time to an address that deviates from the one presented on the postal items that are to be delivered to them. It is not the purpose of this standard to measure the POs performance in a way that provides direct comparison of postal service providers.