The clerk should also enter on the petition a certificate substantially in the following form:
I certify that on the __________________ day of __________________, __________________, I mailed to each of the following persons a copy of the within petition and process to his post office address as disclosed by the record:
__________________
__________________
__________________
and that advertisement has been published in accordance with law, a copy of said advertisement being hereto attached.
This __________________ day of __________________, __________________.
__________________ Clerk
OCGA § 44-2-226