This paper examines the affective dimension of tandem language learning via e-mail. It begins by highlighting some of the obstacles to this mode of learning, including organisational and pedagogical issues as well as the particular issues confronting learners. Drawing on a small body of empirical data, it explores the interactions between these issues and what learners perceive to be intrinsically motivating about tandem learning. It concludes by suggesting that affective learning experience has a potentially powerful role to play in fostering the development of learner autonomy through the reciprocity on which successful tandem learning is founded.