When the Department of Public Safety or the Department of Administration is authorized or required to give notice under this title or regulations adopted under this title, unless a different method of giving notice is otherwise expressly provided, notice shall be given by a qualified person, either by personal delivery to the person to be notified or by registered or certified mail, return receipt requested, addressed to the person at the address of the person as shown in the records of the appropriate department. The giving of notice by mail is considered complete upon the return of the receipt or upon return of the notice as undeliverable, refused, or unclaimed. Proof of the giving of notice in either manner may be made by the affidavit of the person giving the notice by personal delivery or by mail, naming the person to whom the notice was given and specifying the time, place, and manner of giving the notice.