The summer school on Conversational Systems for Mental e-health aims to provide innovative training for early stage researchers (ESR) in the application of conversational systems to the e-health and wellbeing domains . The school is mainly targeting postgraduate students (PhD and master), but it is also open to everybody who is interested in the use of conversational technologies to understand, promote and maintain mental health, helping people with anxiety and depression. The school involves experts from different sectors (academic, business and professional) and disciplines (computer science, psychology, health sciences and social work) and will deal with aspects related to the use of conversational systems to help people with mental health problems. Some sessions will focus on the technological aspects, addressing the challenges of their practical application (e.g. automatic emotion recognition, development of natural language processing services, data science for mental health) and other sessions will focus on mental health aspects taking into account the benefits that technology may bring (e.g. suicide prevention or innovation in service delivery).