This study compared the effects of using voice mail (v-mail) to electronic mail (e-mail) over the Internet to provide student feedback using Media Richness Theory (MRT) and Social Presence Theory (SPT) as the theoretical framework. MRT and SPT would predict that v-mail would be perceived as higher than e-mail in media richness and social presence. Results indicate, however, that while v-mail was perceived to have significantly higher social presence, the two media were not significantly different in terms of perceived media richness. Both e-mail and v-mail were perceived as capable of providing a reasonably high quality of feedback. Implications of these findings are discussed. Constructs and measures are appended. (Contains 33 references.) (Author)