Instead of using the Send E-mail component, invoke the using the SD.EmailSerives project.  This way, you have a central location for managing email in ServiceDesk, consistency in format and behavior.  An example of how to invoke this can be found in Change Management.

Primay model creates, submodels deliver (email templates).  ReportID is required to get the process history, so it cannot be null.

Disabling/Enabling Incident notifications for SendNotificationIncidentCreation and SendNotificationInicdentResolution:
Admin>Data>Application Properties