I faced similar problem in my experience and I had to implement custom logic that I described above. Of course I had to cover all scenarios that are in OOTB logic.Unfortunately, I didn't find any place to extend this logic in more fancy way.If you find it, please share it with us. 

Hi @mahi765183, You can find OOTB logic in the com.day.cq.workflow.impl.email.EMailNotificationService. Unfortunately, there is no room to implement any additional factory or builder that can pre-process email creation. However, there is another trade-off in your case: you can disable all notificati...