We have a group of 4 engineers in different timezones. We want to notify engineers when a customer(external comment) is made on any ticket. All engineers are not watchers on all tickets as to cut-down on emails from internal comments.
We tried setting up a rule to email all 4 engineers when a reply is made from a non-company email address, but we receive duplicate emails. If an engineer is assigned the ticket and the rule fires, the assigned engineer receives two emails.
How can we notify non-participants of a ticket of an external comment on a ticket?
The goal is to respond to external comments as fast as possible, even if you are not assigned to the ticket and you are not a watcher.