From WHMCS Documentation
Actions affecting support tickets will trigger email notifications.
The following matrix defines who will be notified for each action.
|Action||Ticket Watchers||Department Members||Assigned User|
|Change of Ticket Options|
|Change of Ticket Department|
You will not receive an email notification for any changes you initiate yourself.
- Ticket Watchers - Any admin user who has elected to watch a ticket via the admin interface
- Department Members - Any admin user who has elected to receive ticket notifications for a given Support Ticket department and has the Support Emails Admin Role assigned to their account
- Assigned User - Any admin user a ticket is assigned or unassigned from