id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
34782	Explicit support for In-Reply-To / References in EmailMessage	David Gilman	nobody	"If you want email clients to thread a response you need to set the In-Reply-To and References headers in the email with the Message-ID of the email you're responding to.

Right now, with the EmailMessage class, you can set both directly via the headers= kwarg. However, maybe it is worth an explicit kwarg, like it already has with cc, bcc and reply-to, to save the user the hassle of looking up the relevant RFCs and figuring out what needs to be done. It is a little bit of a weird case in that you have to set two different headers to what is usually the same value."	New feature	closed	Core (Mail)	dev	Normal	wontfix			Unreviewed	0	0	0	0	0	0