Methods and devices for data transmission may comprise a computer system comprising: a reception module configured to receive and store condition data assigned to data elements of a data delivery unit; a context checking module configured to check whether a second mobile communication terminal, external to the computer system, satisfies one or more conditions defined by the condition data; and a data transmission module configured to trigger transmission of context-specific data elements from the computer system via the mobile radio network to the first mobile communication terminal. The computer system may be configured to obtain, from a networking unit of the mobile radio network, current attribute data associated with the second mobile communication terminal, and the context checking module may be configured to check, based on these current attribute data and respective condition data, whether the second mobile communication terminal satisfies the conditions.