Ind. Code § 31-21-3-3
(a) Notice required for the exercise of jurisdiction when a person is outside Indiana may be given in a manner prescribed by:
(2) the law of the state in which the service is made.
Notice must be given in a manner reasonably calculated to give actual notice but may be by publication if other means are not effective.
(b) Proof of service may be made in the manner prescribed by:
As added by P.L.138-2007, SEC.45.