def referral_remind():
    if not use_referrals:
        return bad_request(web_utils.NOT_AVAILABLE)
    token, api_key, err_response = auth_request_get_single_param(db, "token")
    if err_response:
        return err_response
    ref = Referral.from_token_user(db.session, token, api_key.user)
    if not ref:
        return bad_request(web_utils.NOT_FOUND)
    if ref.status != ref.STATUS_CREATED:
        return bad_request(web_utils.NOT_FOUND)
    utils.email_referral(logger, ref)
    return 'ok'