Co-morbidity of alcohol use disorder (AUD) and mood disorders presents a great challenge to health systems and exacts a tremendous toll world-wide. Individuals with a dual diagnosis have more severe symptoms, greater disability and poor quality of life than those with either diagnosis alone, and pose a greater economic burden to society due to their higher use of treatment services. New, enhanced, efficient, innovative and cost effective treatment strategies aimed at reducing the burden that the disorders impose on the suffers and their families as well as the community and health systems are required. In a pilot trial of supportive text messages for patients with alcohol use disorders and co-morbid depression, the investigators established that patients who received twice daily supportive text messages for three months had significantly less depressive symptoms than those who did not receive such messages. There was also a trend to finding that patients who received the supportive text messages were more likely to have higher cumulative abstinence duration than those who did not receive any supportive text messages.