Ind. Code § 1-1-7-1
(a) If a statute enacted by the general assembly or a rule, as defined by IC 4-22-2-3 , requires that notice or other matter be given or sent by registered mail or certified mail, a person may use:
(1) any service of the United States Postal Service or any service of a designated private delivery service (as defined by the United States Internal Revenue Service) that:
(2) delivery by an employee of the unit of government sending the notice;
to comply with the statute or rule.
(b) If means of giving notice is not covered by rules adopted by the supreme court and if a notice or other matter sent as described in subsection (a) is returned undelivered, the notice or other matter must be given by:
As amended by P.L.2-1983, SEC.1; P.L.208-2007, SEC.1.