b. Notwithstanding the provisions of subdivision 4 a, if the terms of the policy require the notice of cancellation, refusal to renew, reduction in coverage, or increase in premium to be given to any lienholder, the insurer and lienholder may agree by separate agreement that such notices may be transmitted electronically, provided that the insurer and lienholder agree upon the specifics for transmittal and acknowledgment of notification. Evidence of transmittal or receipt of the notification required by this subsection shall be retained by the insurer for at least one year from the date of termination. "Copy," as used in this subsection, includes photographs, microphotographs, photostats, microfilm, microcard, printouts, or other reproductions of electronically stored data or copies from optical disks, electronically transmitted facsimiles, or any other reproduction of an original from a process that forms a durable medium for its recording, storing, and reproducing.