# File lib/action_mailer/vendor/tmail-1.1.0/tmail/interface.rb, line 478
    def create_reply
      mail = TMail::Mail.parse('')
      mail.subject = 'Re: ' + subject('').sub(/\A(?:\[[^\]]+\])?(?:\s*Re:)*\s*/i, '')
      mail.to_addrs = reply_addresses([])
      mail.in_reply_to = [message_id(nil)].compact
      mail.references = references([]) + [message_id(nil)].compact
      mail.mime_version = '1.0'
      mail
    end