From: <%= name %> <<%= mail %>>
To: <%= receivers.join(', ') %>
Date: <%= date %>
Message-Id: <%= message_id %>
Subject: <%= subject_header %>-<%= serial %> 
 <%= name %>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: base64
Errors-To: <%= receivers[0] %>
X-Mailer: tDiary <%= TDIARY_VERSION %>
X-URL: http://www.tdiary.org/