The board shall by rule establish an electronic filing system for the filing or service of any notice or other document required or permitted by law to be filed with or served on or filed or served by the board. Unless otherwise provided by law, the board may by rule require the filing or service of such notice or other document through the system, notwithstanding the provisions of chapter 17A concerning service or filing by mail. Any notice or other document not required by rule to be filed or served through the system shall be filed or served in accordance with chapter 17A. Unless otherwise provided by law, prescribed time periods shall commence from the date of filing or service through the system.