Ind. R. Civ. P. 4.11
Whenever service by registered or certified mail or other public means by which a return receipt may be requested is authorized, the clerk of the court or a governmental agent under Rule 4.10 shall send the summons and complaint to the person being served at the address supplied upon the summons, or furnished by the person seeking service. In his return the clerk of the court or the governmental agent shall show the date and place of mailing, a copy of the mailed or electronically-transmitted return receipt if and when received by him showing whether the mailing was accepted or returned, and, if accepted, by whom. The return along with the receipt shall be promptly filed by the clerk with the pleadings and become a part of the record. If a mailing by the clerk of the court is returned without acceptance, the clerk shall reissue the summons and complaint for service as requested, by the person seeking service.
Ind. R. Civ. P. 4.11