def METHOD_NAME(
    redirect_url, user, manager, channel_slug, token=None
):
    """Trigger sending an account delete notification for the given user."""
    if not token:
        token = account_delete_token_generator.make_token(user)
    params = urlencode({"token": token})
    delete_url = prepare_url(params, redirect_url)
    payload = {
        "user": get_default_user_payload(user),
        "recipient_email": user.email,
        "token": token,
        "delete_url": delete_url,
        "channel_slug": channel_slug,
        **get_site_context(),
    }
    manager.notify(
        NotifyEventType.ACCOUNT_DELETE, payload=payload, channel_slug=channel_slug
    )