I'm part of a support group and when a ticket comes in, or a customer replies then we all receive the notification email - all good.
But when I reply to the customer, or make an internal comment, I receive an email notification of my own reply. This is because there's a trigger which says to email the group on all updates to tickets.
But I really want a trigger that says "email everyone ELSE in the group (except the current user) on all updates to tickets"
This shouldn't be a problem – Zendesk automatically suppresses email notifications sent to the ticket Requester if they're they one who updated the ticket: see "Notifications: Email user" in this article: Trigger conditions and actions reference
"There's a known limitation for using the Email user + (requester and CCs) action and the Ticket + is + Updated conditions in triggers. Support suppresses emails to a user if the ticket update is from that same user. This is expected behavior to eliminate redundant emails."