The invention relates to a system for the acquisition of electronic services and/or products using electronic messages, comprising: at least a plurality of devices for receiving/sending instructions, wherein each of the devices for receiving/sending instructions is for generating an instruction of the selection carried out by an initial user of said system and sending same to an instruction-processing server for the processing thereof; an instruction-processing server for receiving and processing the selection instruction of the initial user in order to generate an assigning instruction and send same to an assigning server; an assigning server for receiving and processing the assigning instruction of the instruction-processing server, generating a sending instruction that is dealt with by the electronic message-sending device; a plurality of the final user devices, wherein each of the devices is managed by a final user, which receives an electronic message from the electronic message-sending device; and a plurality of servers providing products and/or services, into which the final user inputs information contained in the electronic message received in the final user device via an access portal available in each of said servers providing products and/or services, in order to be able to have access to the requested electronic service and/or product.