Email notification for comment and close ticket

The software is really awesome. I was wondering if there is an option available to select for which cases we want to send notification email to user and agent.

In my case, only first time the user is getting email notification for user name and password, but no further notification for ticket assign, comment or while ticket close. Moreover, agents are also not getting notification which has been assigned to them.

Email notifications are available and select able (admin can chose scenario) in other helpdesk software. I think this will enrich trudesk feature list. Moreover, though this will be a editable from admin anyone can active/deactivate from panel.