When an email is sent to Genesys Cloud, the Message-Id (header) of that email is stored by Genesys somewhere in order to later use that when replying to that specific email. This in order to make sure the conversation is within the same email-thread.
Question: is it possible to retrieve the Message-Id header somewhere?
Example of the Message-Id header for a customer email sent from Gmail:
I don't think the Message-Id header of the first email is available in the conversation context.
As you pointed out in other forum question, the Message-Id of the Auto-Reply and of agents answers do correspond to conversation.participant.email.messageId (workflow, agents).
But running a test, the one from the first email of the customer do not correspond to what's in the conversation context (customer's participant). Unless I missed something when running my test.