In Service Desk Cloud, I've created a ticket and included external customers, they replied to the email and a new tickets was generated. Zendesk has a feature where if a follow-up reply came in, it would not create an additional ticket but add on to the existing ticket. We have had to link 7 tickets to the parent one because Jira created multiple tickets when certain people responded which is very difficult to track and figure out what is going on. Can this be avoided in Service desk?