1616: X.400(1988) for the Academic and Research Community in Europe. RARE WG-MSG Task Force 88,

The European research and development community, as represented by the member research networks of RARE, has lead the deployment within the global R&D community of X.400 electronic messaging services, as specified in the international recommendations CCITT X.400(1984), for more than five years. As a result of providing such services to the European R&D users it has become clear that there is an existing and ever increasing demand from these users for new and enhanced electronic messaging services and product to be used to communicate within the R&D community but within commercial service providers and organisations as well.