def archive_message_url(
    site_url, html_root, sanitized_stream_name, sanitized_topic_name, msg_id
):
    """
    http://127.0.0.1:4000/archive/stream/213222-general/topic/newstreams.html#1234567
    """
    topic_url = archive_topic_url(
        site_url, html_root, sanitized_stream_name, sanitized_topic_name
    )
    return f"{topic_url}#{msg_id}"