I can't see a way of doing this from UEMCLI, but it is possible using REST:  POST /api/instances/alertConfig/ /action/testEmailAlert  Instance ID in my case was 0, but you can find that using GET /api/types/alertConfig/instances.
Does anyone know how to send a test alert email using CLI?  I can easily send a test alert email from GUI by just clicking [Send Test Email] button. However, I could not find the way in service command/Unisphere CLI... [IMAGE]
Unity: Can we send an alert email test from CLI?