You can choose the event to send this email and customise the subject and description of the email. You can use macros to replace dynamically while actually sending email notifications.
New Task – sent after a new task is created
Task Reply – sent after a reply added to a task
Change Task Status – sent after task status is changed
Assign Staff – sent after a staff is assigned to a task
Delete Task – sent after a task is deleted
Private Note – sent after a private note added to a task
Change Task Category – sent after task category changed
Change Task Priority – sent after task priority changed
Edit the email recipients and add additional recipients if you wish.
You may set your rule to determine when to send this email.