This paper explores processes in electronic communication, specifically email, and the ways in which this technology can contribute to counterproductive workplace behaviours leading to, and including, bullying. It uses three case studies of people who use email in their daily work. The study points to a number of issues which have a negative impact on workers, stemming from lack of understanding of the blurred boundaries between formal and informal communication by email. It elaborates three levels of behaviour that point to the potential for email to be used as a mode of bullying and provides strategies for reducing these potentials.