Customer still receiving emails even when CC'd users drop the customer in their Gmail thread

Hi Community!

If a customer emails Support and CCs other people, and then one of those CC’d people replies separately without the customer on the thread, the customer (original requester) will still receive the reply in Zendesk.

For example, if customer John emails support@example.com and CCs michael@example.com and engineering@example.com, a ticket will be created in Zendesk. Then, if Michael goes directly to Gmail, removes the customer from the thread in Gmail, and sends an email (which he intends to reach only Support and Engineering - which is why he removed the customer), the customer still receives Michael's email because they are considered the original requester linked to that ticket in Zendesk.

If Michael removes the customer from the thread in his own Gmail account, we want only the people who are still CC'd to receive the email, not the customer. Is there a way around this?