Abstract: The invention relates to a method of transmitting and processing group messages in an electronic mail system and can be used in the course of processing and forming catalogues of messages meant for many addressees. A technical result is enhancement of the efficiency of processing messages meant for many addressees by optimizing the structure of the messages in order to reduce losses of transmitted information and simplify the processing thereof. An initial message meant for many addressees is converted by forming therefrom a set of subsidiary messages for each addressee which contain an information field, identical for all of the subsidiary messages, and a distinguishing service field which is an identifier of the subsidiary message. At least a two-level catalogue of initial messages is formed in which a line of record on the first level relates to the initial message and contains attributes: list of addresses Adr_1, . . . Adr_2, . . .

Abstract: The invention relates to a method and apparatus for transmitting electronic mail messages in a local network using information of dynamic routing to provide the electronic mail with service of the required type. A message written by means of a user program 24 is sent to a queue dispatcher 25 which sends information on the address of reception and type of service for the electronic mail to unit 26 for determining a message transmission route. Unit 26 for determining a route controls routing table 27, changing it at the request of control unit 28, and transmits information on the network unit which is the point of destination to the queue dispatcher 25. A communication unit 29 transmits and receives electronic mail and data for making up the routing table.

Abstract: The invention relates to a method for transmitting messages between networked subscriber units, which improves the network overall efficiency and allows the traffic load on the network units to be more uniformly distributed. At least one network service unit is assigned from the subscriber units to receive and intermediately store the messages. Each of the network elements generates a periodically transmitted service signal including identification and status information of the network element. On the basis of the received service signals, each of the network elements generates an accessibility ranked list 9 of all operative network elements, including a field 10 with identification of a subscriber unit, field 11 indicating the subscriber unit's function and field 12 indicating accessibility of the appropriate network element. The message is transmitted to the destination unit over a route determined on the basis of the ranked list of the network elements.