Whilst electronic self-monitoring and intervention programmes for mood disturbances in psychiatric disorders may promote self-management and patient empowerment, some level of interaction with professionals (such as clinicians, counsellors, and researchers) coupled with support is still positively valued by patients. This can allow for a more personalised approach, improve the efficiency of treatment, and adverse events can be managed in a time-appropriate manner, thereby mitigating some of the

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... risks associated with mood fluctuations. Methods: This systematic review synthesises quantitative and qualitative evidence on the effectiveness and feasibility of daily/weekly/monthly remote mood monitoring by distant supporters (clinicians, lay counsellors, and researchers) (or with regular feedback by distant supporters in cases where mood monitoring was self-assessed), in participants with any psychiatric disorder. Effectiveness was defined by the change in depression and/or mania scores. Feasibility was determined according to completion/attrition rates and participant feedback. Studies were assessed for quality using the Mixed Methods Appraisal Tool (MMAT) version 2018. Results: Eight studies met our inclusion criteria. Distant mood monitoring was effective in improving depression scores but not mania scores. Feasibility, as measured through compliance and completion rates and participant feedback, varied. Conclusion: Distant mood monitoring with feedback is an appealing intervention, particularly in low resourced settings; however, further studies are needed to better understand the utility, feasibility, and effectiveness of these interventions in routine clinical care.