A method for effecting delivery of a message from an originator in an original message format to a plurality of authorized receivers in a respective reception message format includes: (a) composing the message; (b) characterizing the message for addressing to indicate at least one feature of the message; (c) addressing the message according to the characterizing pursuant to information provided in a data base that identifies particulars relating to each respective authorized receiver; the addressing establishing selected receivers of the plurality of authorized receivers as permitted receivers; the particulars including the appropriate respective reception message format for each respective permitted receiver; and (d) transmitting the message to each respective permitted receiver via a communication network that includes respective communication media configured for delivering the message in the appropriate respective reception message format to each respective permitted receiver.