Gmail send message with thread id

The idea is:

Add Thread Id option to Send Message

My use case:

Forwarding Gmail messages. Ability to see the sent emails in same thread as the original messages.

I think it would be beneficial to add this because:

Organizing emails by thread is a key part of Gmail. By supporting this, it will be easier to understand what messages were sent by automation flow on a given thread. Drafts already have had Thread Id added - but unfortunately there is no mechanism for sending a draft via automation.

Any resources to support this?

Thread id was already implemented for drafts (https://github.com/n8n-io/n8n/pull/8728).

Are you willing to work on this?

Maybe - it seems like a low hanging fruit for someone who has a n8n dev setup with custom nodes already (I don’t have that currently)