Digital mental health (DMH) refers to all mental health help delivered via digital platforms (Graham et al., 2019; Smith et al., 2023). It can be used as standalone self-help interventions or as an adjunct to traditional face-to-face therapy (Ganapathy et al., 2023). Websites, mobile applications (apps), virtual reality, augmented reality, and videoconferencing technologies are being used to deliver therapies, homework, and CBT modules, either with or without the support of a health professional. Today, DMH is a viable option for treating common mental health disorders (Andersson et al., 2019). With the widespread availability of the internet and people’s rising comfort in using digital technologies, mental health services can greatly benefit from incorporating digital solutions (Ganapathy et al., 2023). Some researchers argue that a well-developed DMH intervention may not even require the support of a mental health professional (MHP) (Morgan et al., 2017). Furthermore, large conglomerates (such as JP Morgan, Meta, Telstra Health) see this industry as a potential profit-making market. Given this context, it is critical that researchers and MHPs take the lead in implementing and adopting digital technologies in mental health service delivery. This will ensure that evidence based DMH practices are available to those who need care are provided under ethical standards. Post the Coronavirus Disease (COVID) pandemic, people’s comfort with using technology for health-related needs has only increased (Lattie et al., 2022; Torous et al., 2020), making the adoption of these interventions not just an option, but a necessity. The field of mental health stands to reap substantial benefits from digital technologies, including reaching a larger number of consumers, automating some services to save time and cost, and extending care to previously unreachable populations such as those in rural and remote areas or armed officials in war zones (Andersson & Titov, 2014; Reger et al., 2017; Tal & Torous, 2017). These arguments in support of DMH services have been presented for more than two decades. Adoption and implementation of evidence-based DMH practices are well underway, and recent years have seen increased efforts to understand the barriers to using DMH services (Adkins et al., 2017; Bengtsson et al., 2015; Breedvelt et al., 2019; Dodd et al., 2017; Feijt et al., 2018; Orlowski et al., 2016; Perry et al., 2019; Tlach et al., 2016). This PhD thesis sought to expand on the existing work regarding the barriers to DMH experienced by consumers and MHPs. [...]