PurposeThe paper aims to make a contribution by providing a comprehensive understanding of the scope of the implementation of sustainable marketing tools in SMEs operating in the food and drink industry in Europe. The focus will be put on the identification of differences between companies operating in business-to-business (B2B) and business-to-customer (B2C) context.Design/methodology/approachThe empirical basis is a survey of 770 European SMEs, of which 369 operate in Western European countries (including UK, Germany and Spain) and 401 in Central and Eastern Europe (including Poland, Croatia and Russia). The respondents in the particular countries were stratified according to company size, measured by the number of employees. The research covered 316 micro companies, 5 small companies and 209 medium ones. The questionnaire was completed by the managing directors of the enterprises (CEOs) or heads of the marketing departments (CMOs). The research was conducted between April 2016 and January 2017. An in-depth analysis of the findings helped to identify differences between the two groups of SMEs, i.e. operating in the B2B and B2C context, in terms of the extent of sustainable marketing implementation. The non-parametric U Mann–Whitney test was used to examine the significance of the differences between the two groups of companies.FindingsThe research results suggest that both groups of B2B and B2C companies implement sustainable marketing tools to some extent. However, in most cases, B2B organizations do it to a significantly greater extent. Nevertheless, these activities relate mainly to those tools, which are directly visible to customers, both institutional and individual, such as packaging, product ingredients or certificates. To a lesser extent, they involve marketing activities of an internal nature, such as production process and the level of energy, water or resources used.Originality/valueTo the best knowledge of the author, this is the first empirical research study on the implementation of the sustainable marketing concept in SMEs operating in European countries. The study is a comparative analysis of the phenomenon between B2B and B2C companies, which has not been previously researched.