Ohio Rev. Code Ann. § 1311.19
(A) Except as otherwise provided in section 1311.11 of the Revised Code and division (C) of this section, any notice, affidavit, or other document required to be served under this chapter shall be served by one of the following means:
(C) A notice, affidavit, or other document required to be served under this chapter is considered served, whether or not the notice, affidavit, or other document was served by the means described in divisions (A)(1) to (3) of this section, and service is complete on the date the notice, affidavit, or other document is received, if either of the following is true regarding the notice, affidavit, or other document: