Apparatus are provided that include a mobile access notification service interface configured to operate on messages targeting a mobile access notification service so that a given message targeting a given user via the mobile access notification service causes a access notice indicator of the given user's mobile data communication device to visibly show when data from the given message is ready for access via one or more designated non-mobile access devices. The mobile access notification service interface includes an access notification trigger data detector configured to process and identify, from among plural messages originating at message source machines, access notification messages containing access notification trigger data. A mobile access notification service linking mechanism is configured to link access notification messages containing the access notification trigger data to access notice indicators on corresponding targeted user mobile data communication devices, to link the access notification messages to one or more non-mobile access devices for access of content of the access notification messages at those non-mobile access devices, and to communicate non-mobile access device access code information to the targeted users for controlled user access at the one or more non-mobile access devices.