As part of a larger endeavor to evaluate the impact of communication technology on organizations, this study assesses the accuracy of information diffusion via electronic-mail and courier-mail systems in two large organizations which have implemented electronic-mail systems in the last three years. Data were obtained through the use of questionnaires prepared using the Episodic Communication Channels in Organizations (ECCO) method. Related literature is reviewed, the research methodology is discussed, and results are presented. Conclusions indicate that channel selection has little, if any, impact on the accuracy of message recall, and that the salience of a message appears to have a more significant effect on message fidelity. Future researchers will need to address the several intervening variables that may have affected the study results. References are provided, and an ECCO format is appended. (KM)