If a court has declared a person to be insane, gravely disabled, incapacitated, or mentally incompetent to manage that person's property and has appointed a guardian or conservator for the person, the person must be served by serving the guardian or conservator in the manner set forth in Rule 4.1(d) for serving an individual, and separately serving the person in that same manner.
Ariz. R. Civ. P. 4.1
Amended effective January 1, 2017.
State Bar Committee Note
1991 Amendments to Rule 4.1 (l) and 4.1(m)
Even where the conditions specified in the Rule are present, service by publication must also satisfy due process standards of being the best means of notice practicable under the circumstances and reasonably calculated to apprise interested parties of the institution and/or pendency of the proceedings. Mullane v. Central Hanover Bank & Trust Company, 339 U.S. 306, 94 L. Ed. 865 (1950). The party who elects to make service by publication is at risk that the service will be subject to a subsequent successful constitutional challenge. Where the last-known address of the person to be served by publication is outside Arizona, the procedures set forth in  Rule[f] are to be followed. The provision requiring a supplementary mailing of a copy of the summons and of the pleading being served where the person's address is known has been retained, but it is stressed that service by publication on a person whose current address is known is only to be employed where it can be shown that that person is attempting to evade service. While the new Rule retains the provision that only the summons need be published, it adds the requirement that the publication contain a statement as to the manner in which a copy of the pleading being served may be obtained.
[Rule 4.1(m), formerly Rule] is former Rule , the specific provision authorizing service of process by publication upon the unknown heirs of a decedent in certain actions involving real property. The Rule is included here because it deals with service of process at the initiation of the action rather than the service of pleadings and other papers generated during the course of the action. Because, by definition, both the identities and the residences of these heirs, if any, will be unknown, publication under this Rule need only be made in the county where the action is pending.