E-cigarettes for Harm Reduction Among Smokers With Serious Mental Illness

Inclusion Criteria: * Currently smokes 5 or more CPD * Willingness and ability to provide informed consent * Age of at least 21 years * Has SMI diagnosis (such as Schizophrenia, Schizoaffective disorders, Bipolar disorder, Depressive disorders, Trauma and stressor related disorders etc.) as determined using the MINI tool * Interested in reducing CC smoking but not necessarily trying to quit * Own a mobile phone or have regular access to a mobile phone * Able to provide an additional contact to improve follow-up rates Exclusion Criteria: * Is pregnant or breastfeeding * Used tobacco other than CC in the past 2 weeks (e.g., EC, cigarillo) * Currently engaged in an attempt to quit CC * Change in dose of their psychotropic medication(s) in the last 30 days * Meeting DSM-V criteria for current alcohol or substance use disorder except for nicotine use disorder and active mild alcohol or substance use disorders. * Past month suicidal ideation/suicide attempt and/or psychiatric hospitalization in the last 30 days