Emailing does not preclude emotional exchange and many times it causes us to engage in spiralling exchanges of increasingly angry emailing. The purpose of this chapter is threefold: to explore how factors of temporality are related to anger when emailing, to model circumstances that protect against, but also ignite, anger escalation, and to raise a discussion for practitioners of how to avoid damaging email communication. By intersecting literature on communication, information systems, psychology and organisational studies, factors leading to an ‘emotional verge’ are identified and summarised in a model showing factors likely to prime, but also protect against, anger escalation.