A system and method is described for controlling user access to a carrier's shipping services for delivery of a package. The system controls the user's access to the carrier's services by either limiting the selection of locations from which a package can be shipped to fewer than those described by the carrier's service area, or by limiting the user's ability to select shipping service levels to fewer than those provided by the carrier. Such limitation may be by way of displaying only a limited collection of ship from locations and service levels, or by pre-populating and locking ship from information submission fields on a web page. The distributed-user shipping system may reside on a client server or mobile computer that is connected to the carrier's server and transmits various shipping location information and service level selections to the carrier to facilitate shipping of packages while controlling the scope of shipping services provided.