This paper reports on a case study in which an e-mail system was used as a tool to foster collaboration among a group of students enrolled in an educational management course offered by the Open University of Hong Kong (OUHK). It focuses on a set of interview data and, in analysing the interview data, it takes into account the sociocultural perspective on learning in relation to the use of computer-mediated communication in education. The aim of this study is to draw out implications for improved practices in managing online discussion groups in contexts such as the OUHK.[Copyright of Open Learning is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/02680510120050343]