In part one of the blog series, Dr. Katie Young, Digital Health Scientist explored why Mental Health might have changed during the pandemic, and reviewed the evidence assessing whether mental health has changed during the pandemic. She also discussed the importance of knowing whose mental health has worsened during the pandemic so we can improve our understanding of the needs of those at greatest risk. In part two, we discuss the major changes, challenges and opportunities brought about by COVID-19 to the digital mental health treatment landscape.