# File lib/sup/message.rb, line 302
  def indexable_content
    load_from_source!
    [
      from && from.indexable_content,
      to.map { |p| p.indexable_content },
      cc.map { |p| p.indexable_content },
      bcc.map { |p| p.indexable_content },
      indexable_chunks.map { |c| c.lines },
      indexable_subject,
    ].flatten.compact.join " "
  end