I have a Send notification action as a part of the Flexi task process but it is not sending any emails. The email was initially going to Created By in To field and one or two users in the CC field. Since one of those users can be empty I removed them completely leaving only the Created By in the To field. Still not working. Any idea why this notification is not generated? All Flexi task emails work and I also added the Send notification in a different part of the workflow and it also works.