Currently it is possible to have e-mails as inputs or outputs of flows.
Some headers can be set directly, like To and CC, but not all: specifically, In-Reply-To and References should be updated for email threading to work as expected.
This would allow for flows where an email by Node-RED can be clearly marked as a reply to the email that initially triggered the flow.
An easy way of implementing this is to add those fields to the existing nodemailer interface, as it implements them already.
1 Like
great - we look forwards to the pull request.
Great - that was quick 
1 Like
There wasn't much work to do!
I hope it is useful to others too.
1 Like
I assume you have tested it and are happy with it now ?
Yes!
The messages correctly thread after setting these headers to the Message-Id of the original message. And setting the subject to "Re: [original subject]".
It was really just propagating the headers to the underlying library.
3 Likes
The version bump to 1.5.0 changes the dependency mailparser-mit to mailparser. This works if mailparser-mit happens to be installed but fails otherwise.
