BackgroundThe coronavirus disease 2019 (COVID-19) pandemic and associated interventions resulted in changes in both the demand and supply of mental health services and necessitated agile adaptation and innovation from service providers.AimsThe aim of this study was to explore what innovative solutions were adopted in response to COVID-19 and the pandemic control measures, what opportunities and challenges were associated with these innovations, as well as to critically reflect on the longer-term sustainability of the innovations in the context of Aotearoa/New Zealand mental healthcare.Materials and methodsWe used thematic analysis to analyse the data from the 23 in-depth interviews with helpline employees and general practitioners from 18 service providers that regularly engage in mental healthcare.ResultsTwo key themes related to COVID-19 and the pandemic control measures were identified from respondents’ accounts. These were “Technological innovations” and “Process innovations” where providers noted types of innovative solutions, and opportunities and challenges associated with those. The themes culminated in a meta theme “Sustainability of changes to service delivery” that appeared consistently in each theme and asks to consider how sustainable these innovative solutions might be in the long-term. Namely, sustainability of innovation was questioned in respect to the (a) innovative solutions being the emergency solutions with little or no impact analysis, (b) “returning back to normal” due to limited future funding and innovation as a sunk cost, and (c) sporadic and inconsistent innovation between service providers that does not contribute to quality and continuity of care from the systems perspective.ConclusionCOVID-19 and the measures of pandemic control were associated with an increase in innovative solutions from service providers. There were both opportunities and challenges associated with these innovative efforts and the sustainability of innovation was questioned. Future research about COVID-19 related innovation of service provision should focus on service user experiences and empirically measure the innovation safety and efficacy.