The success of an organization depends on rapid, reliable, and direct communications within the organization and with the outside world. To determine if electronic mail (e-mail) provides a competitive benefit, a sample of 99 management-level participants in 41 companies responded to a survey that assessed their intraorganizational (internal) and interorganizational (external) uses of e-mail. Through the use of factor analysis and regression methodologies, the researchers investigated whether a significant relationship exists between the internal and external uses and benefits of e-mail. The intraorganizational uses of e-mail indicated a significant and positive relationship with the organizational benefits of e-mail, thus, supporting the electronic exchange of information within organizations.However, the results indicated that interorganizational uses of e-mail did not promote corporate communication outside the company. Thus, managers need to know which communication technology is appropriate for intraorganizational and interorganizational uses.