Objective Understanding how small unexpected acts or gestures by healthcare professionals, known as Mangomoments, are translated into practice, what their preconditions are and what their impact is on patients and families, healthcare professionals and organisations. Design A multi-method design was used based on four phases: (1) A (media)campaign to collect Mangomoment stories (n=1045), of which 94% (n=983) were defined as Mangomoments; (2) Semi-structured interviews (n=120); (3) Focus group interviews (n=3); and (4) A consensus meeting. Setting Respondents from a hospital and primary care setting. Participants Patients, family, healthcare professionals, managers, researchers and a policymaker participated. Results Mangomoments are mainly classified in the dimensions ‘Respect for values, preferences and needs’ and ‘Emotional support’. Differences in importance of the dimensions were found between healthcare professionals, oncological patients and family and non-oncological patients and family. The results of the interviews, focus groups and consensus meeting were visualised by the Mangomoment model. It identifies several preconditions on the level of patients, healthcare professionals and leadership. For each of these preconditions a catalyst was identified to increase the prevalence of Mangomoments. In general, Mangomoments improved the patient and family experience and facilitated adherence to therapy and led to a positive perception on the healing process. Positive effects for professionals include personal accomplishment and anti-burnout, joy in work and a positive team atmosphere. This led to positive resonance by a relationship of trust between the patient and the healthcare professionals, feelings of tolerance during negative experiences and open communication and a safe climate. Overall, patients and healthcare workers concluded that Mangomoments led to loyalty to the healthcare organisation. Conclusion Mangomoments do not only have a positive impact on patient and family but also on the healthcare ...