Purpose - This paper proposes a model which serves to illustrate that a number of factors are responsible for, and contribute to, the different forms of sustainability of digital information services. It also identifies some areas of information research and their interrelationship in the context of sustainability of digital information services. Design/methodology/approach - This research is based on critical analysis of a range of research and policy documents, and an environment scan, in different aspects of sustainability of information systems and services. Recent and relevant past research studies as well as some relevant government policies and initiatives have been critically analysed in order to identify various factors that are said to contribute to the economic, social and environmental sustainability of information services. Findings - Noted that the sustainability of information has not been studied within the mainstream information science research. However, several previous research studies have produced findings and models that can be used to achieve some aspects of sustainability of information. Noted that various parameters of sustainability are inter-related and hence a proper research agenda has to be prepared, and concerted research efforts are needed in order to be able to develop and manage sustainable digital information services. Practical implications - For this first time a model has been proposed showing the various factors to be studied for achieving the economic, social and environmental sustainability of information services. Interrelations among the different factors and their implications for sustainability of digital information systems services are also discussed. Originality/value - The model is expected to open new vistas for research in the economic, social and environmental sustainability of digital information systems and services. It will develop new tools, technologies and applications for building sustainable information systems and services appropriate for the digital era.