Indiana Code Title 33. Courts and Court Officers § 33-32-2-10

(1) to each party who is required to receive the mailing; and

(2) to only one (1) of the party's addresses;

(1) An envelope with sufficient postage affixed, addressed to the recipient with the address of the clerk's office as the return address.

(2) The United States Postal Service forms for registered or certified mail.  If return receipt is requested, the forms must be completed so that the clerk's office receives the return receipt.

(3) The United States Postal Service fee for the appropriate service by registered or certified mail and return receipt, if requested.