The insurer shall file with the commission, at Lansing, Michigan, at least 30 days before the effectiveness of any termination or cancellation of the contract or policy, a notice giving the date at which it is proposed to terminate or cancel the contract or policy. Any termination of the contract or policy shall not be effective as far as the insured covered by the policy is concerned until 30 days after such notice of the proposed termination or cancellation is received by the commission.