# File lib/sup/modes/thread-view-mode.rb, line 195
  def subscribe_to_list
    m = @message_lines[curpos] or return
    if m.list_subscribe && m.list_subscribe =~ /<mailto:(.*?)(\?subject=(.*?))?>/
      ComposeMode.spawn_nicely :from => AccountManager.account_for(m.recipient_email), :to => [Person.from_address($1)], :subj => ($3 || "subscribe")
    else
      BufferManager.flash "Can't find List-Subscribe header for this message."
    end
  end