Header field: In-Reply-To

Identify replied-to message(s)

Applicable protocol:

Mail (http://www.rfc-editor.org/rfc/rfc2822.txt)

Status:

standards-track

Author/Change controller:

IETF (mailto:iesg@ietf.org)
Internet Engineering Task Force.

Specification document(s):

http://www.rfc-editor.org/rfc/rfc2822.txt (section 3.6.4)

Related information:

The message identifier(s) of the original message(s) to which the current message is a reply.