How do I send email notifications from a comment?
Notify and send emails to a specific user or to all the assignees of a task by tagging them when you enter comments in tasks. This lets you share feedback, ask questions, and notify other task participants immediately on the actions you're performing on the task.
To send email notifications from a comment entered for a task:
Note that for this feature to work, email notifications must be enabled in the Admin UI. See Enable Email Notifications.