Enhance Gmail Node to Support Threaded Drafts

Currently, to me look like the Gmail Node in n8n allows users to create drafts using the “Create Draft” action. However, when replying to an existing email, the draft does not appear in the same thread when opening the conversation in Gmail (but only in the draft section).

This should happens because Gmail organizes email threads using specific headers, such as:

  • In-Reply-To (references the original email’s Message-ID)
  • References (links back to previous emails in the thread)

Right now, the Gmail Node does not allow setting custom email headers, which prevents proper threading when creating a draft. It would be great to have new option as we have for other elements!

Thank you