The Service Tree lists all services in "branched" groups, starting with the very general and moving to the very specific. Click on the name of any group name to see the sub-groups available within it. Click on a service code to see its details and the providers who offer that service.
Business Support Organizations/Services
Organizations that assemble, sort, stamp, bundle and transport bulk mailings as a service for other organizations. Also included are units within local post offices that process bulk mailings.
Local offices that are responsible for the collection, processing and delivery of letters, parcels, mailgrams and other material handled by the postal service as well as retail sales of postage stamps, mailing materials and other mail related items. Most post offices also have locked post boxes that customers can rent for delivery of their mail rather than relying on general mail delivery, a service that is provided at no cost.