The Treasurer shall not be required to make personal demand for the payment of taxes, but, upon receipt of the City tax roll by him, he shall forthwith mail a tax statement to each person named in the tax roll and shall give notice of the date upon which City taxes are due by publication in the official newspaper of the City, which notice shall be sufficient demand for the payment of all taxes assessed. Neither the failure on the part of any person to receive the notice or the tax statement shall invalidate the taxes on the tax roll or release any person or property assessed from the penalty provided in this chapter (article) in case of non-payment.