After jurisdiction is established, the agency will serve a copy of the complaint upon the respondent within 20 days by mail or electronic mail. In the absence of a response from the first named respondent within 90 days, the agency shall serve the complaint on the first-named respondent by certified mail within 20 days and inform complainant by letter of acknowledgment of the right to withdraw the complaint or to request an administrative release to commence the complainant's own action in Iowa district court in accordance with Iowa Code section 216.16.
Iowa Admin. Code r. 161-3.5