• [1] Mail-Followup-To and Mail-Reply-To http://cr.yp.to/proto/replyto.html
• [2] 2002-12-29 15:22 名無しさん: See also [mew-dist 22724]

[3] [mew-dist 22724] Re: Mail-Followup-To: ( (2009-06-18 10:00:43 +09:00 版)) http://www.mew.org/pipermail/mew-dist/2002-December/022419.html