This paper addresses electronic evidence focusing on arbitration rules of the leading ADR providers. It also narrows the topic to an empirical assessment using six categories of electronic evidence in a sample of 92 arbitration proceedings. The paper aims to offer the concept of electronic evidence in international arbitration, its admissibility and relevance criteria, and reach conclusions from an empirical analysis of a large sample of arbitration proceedings gathered from the Centro Brasileiro de Mediação e Arbitragem (Brazilian Center for Mediation and Arbitration). We conclude that electronic evidence is regularly used in arbitration and is relevant to the arbitrators’ reasoning. We propose a revision on the 2016 Draft Convention on Electronic Evidence to include arbitration.

Index words: alternative dispute resolution; arbitration; electronic evidence; admissibility; relevance; weight; empirical analysis