RecruitingBehavioural interventionHarm Reduction for Smokers With Mental IllnessTo compare the efficacy of e-cigarette (e-cig) provision with or without behavioral support (SWITCH IT) delivered via telehealth to reduce harm among smokers with MI who cannot quit smoking and are not ready to pursue cessation treatment, and to examine self-regulation (using e-cigs instead of cigarettes to cope with stress/distress and self-efficacy) as a potential mechanism for behavior change from SWITCH IT