Downstream Access (DSA) refers to the ability of mail distributors or postal services that can inject post in to the Royal Mail system, by-passing some parts of the network.
DSA providers can often get better rates by pooling client’s post together for bulk discounts.
DSA providers often conduct mail collection, sorting, fulfilment and other services.
Popular ISO standards for those providing downstream access include ISO 27001, ISO 9001, ISO 45001.
See also: standards in the Logistics Industry.
