I have a customer who manages his emails through Gmail. He has a process to create case based on incoming email and then a power automate flow to create answer to this original email which is sent from CRM. When he goes to Gmail this answer message creates a new thread instead to be connected with original email which created case. Could anyone advise me what actions and how should be created in power automate in order to connect the answer email to a thread of original email?
Problem with relating emails in the same thread in Gmail
To make Gmail recognize your Power Automate email as a reply (not a new message), you must:
Capture the original email’s Message-ID when the case is created.
Use Gmail’s advanced send message (HTTP-based) action to include:
In-Reply-To header = original email’s Message-ID
References header = original email’s Message-ID
Optionally, preserve the same Subject line (e.g. "Re: [original subject]").
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