---
title: "Discussion on \"Replying in the same Gmail thread from n8n: threadId, Message-ID and the Re: subject\" | Hashnode"
description: "Discussion on \"Replying in the same Gmail thread from n8n: threadId, Message-ID and the Re: subject\". How to send a follow-up as a reply under your client's quote instead of a new email, and why a new email hides the customer's answer from your flow"
url: "https://hashnode.com/posts/replying-in-the-same-gmail-thread-from-n8n-threadid-message-id-and-the-re-subject/6ad18f4b31c9ad160041020d"
---

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# [Replying in the same Gmail thread from n8n: threadId, Message-ID and the Re: subject](https://smallhours.hashnode.dev/replying-in-the-same-gmail-thread-from-n8n-threadid-message-id-and-the-re-subject?utm_source=hashnode&utm_medium=feed)

How to send a follow-up as a reply under your client's quote instead of a new email, and why a new email hides the customer's answer from your flow

Oct 16 · 7 min read · smallhours.hashnode.dev  
Updated Oct 19  
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## Responses 1

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[StackShortlist](https://hashnode.com/@veristria)

[Oct 16](https://hashnode.com/posts/replying-in-the-same-gmail-thread-from-n8n-threadid-message-id-and-the-re-subject/6ad18f4b31c9ad160041020d/comment/6ad2aafaa305ffe669180534)

Setting In-Reply-To and References from the original Message-ID is what makes the reply thread correctly for the recipient too, not just in your own Gmail, since Outlook and Apple Mail ignore Gmail's threadId entirely. Keeping the subject identical apart from the Re: prefix matters for Gmail's own grouping. Storing the Message-ID next to the lead row also makes later follow ups much simpler.