Rule 4.6.Process: Limits; Amendment; Service Refused; Service Unclaimed

Last amended July 1, 2023 · Last verified July 1, 2026

In one sentenceRule 4.6 sets the geographic reach of Ohio process, lets a court fix a defective summons or proof of service by amendment, and gives a plaintiff an ordinary-mail fallback — with a fresh twenty-eight-day answer clock — when certified or express mail service is refused or comes back unclaimed.

Full Text of Rule 4.6

Text sizeJump to: (A) (B) (C) (D) (E)

A Limits of effective service

All process may be served anywhere in this state and, when authorized by law or these rules, may be served outside this state.

B Amendment

The court within its discretion and upon such terms as are just, may at any time allow the amendment of any process or proof of service thereof, unless the amendment would cause material prejudice to the substantial rights of the party against whom the process was issued.

C Service refused

If attempted service of process by United States certified or express mail or by commercial carrier service within or outside the state is refused, and the certified or express mail envelope or return of the commercial carrier shows such refusal, or the return of the person serving process by personal service within or outside the state or by residence service within the state specifies that service of process has been refused, the clerk shall forthwith notify the attorney of record or, if there is no attorney of record, the party at whose instance process was issued and enter the fact and method of notification on the appearance docket. If the attorney, or serving party, after notification by the clerk, files with the clerk a written request for ordinary mail service, the clerk shall send by United States ordinary mail a copy of the summons and complaint or other document to be served to the defendant at the address set forth in the caption, or at the address set forth in written instructions furnished to the clerk. The mailing shall be evidenced by a certificate of mailing which shall be completed and filed by the clerk. Answer day shall be twenty-eight days after the date of mailing as evidenced by the certificate of mailing. The clerk shall endorse this answer date upon the summons which is sent by ordinary mail. Service shall be deemed complete when the fact of mailing is entered of record. Failure to claim United States certified or express mail or commercial carrier service is not refusal of service within the meaning of this division. This division shall not apply if any reason for failure of delivery other than “Refused” is also shown on the United States certified or express mail envelope.

D United States certified or express mail, or commercial carrier service unclaimed

If attempted service using United States certified or express mail or commercial carrier within or outside the state is returned with an endorsement stating that the envelope was unclaimed or a similar endorsement indicating the item was unclaimed, the clerk shall forthwith notify the attorney of record or, if there is no attorney of record, the party at whose instance process was issued and enter the fact and method of notification on the appearance docket. If the attorney, or serving party, after notification by the clerk, files with the clerk a written request for ordinary mail service, the clerk shall send by United States ordinary mail a copy of the summons and complaint or other document to be served to the defendant at the address set forth in the caption, or at the address set forth in written instructions furnished to the clerk. The mailing shall be evidenced by a certificate of mailing which shall be completed and filed by the clerk. Answer day shall be twenty-eight days after the date of mailing as evidenced by the certificate of mailing. The clerk shall endorse this answer date upon the summons which is sent by ordinary mail. Service shall be deemed complete when the fact of mailing is entered of record, provided that the ordinary mail envelope is not returned by the postal authorities with an endorsement showing failure of delivery. If the ordinary mail envelope is returned undelivered, the clerk shall forthwith notify the attorney, or serving party.

E Duty of attorney of record or serving party

The attorney of record or the serving party shall be responsible for determining if service has been made and shall timely file written instructions with the clerk regarding completion of service notwithstanding the provisions in Civ.R. 4.1 through 4.6 which instruct a clerk to notify the attorney of record or the serving party of failure of service of process.

Amendment History

Effective Date: July 1, 1970

Amended: July 1, 1971; July 1, 1978; July 1, 1997; July 1, 2012; July 1, 2023

Staff Note (July 1, 1997 Amendment)

Rule 4.6 Process: limits; amendment; service refused; service unclaimed

Prior to the 1997 amendment, service of process under this rule was permitted only by certified mail. It appears that service of process by express mail, i.e. as that sort of mail is delivered by the United States Postal Service, can always be obtained return receipt requested, and thus could accomplish the purpose of notification equally well as certified mail. Therefore, the amendment provides for this additional option for service.

Other amendments to this rule are nonsubstantive grammatical or stylistic changes.

Staff Note (July 1, 2012 Amendment)

Divisions (C) and (D) are amended (1) to specify that their provisions for service by United States ordinary mail apply to service by commercial carrier that is returned showing “Refused” but do not apply to service by commercial carrier that is returned showing “Unclaimed” and (2) to make clear that these divisions are applicable to U.S. mail service attempted both within and outside the state.

Division (C) relating to service “Refused” is also amended to specify that its provisions do not apply to ambiguous returns of U.S. certified or express mail stating other reasons for failure of delivery that suggest lack of actual notice to the defendant, such as “unable to forward”. Division (D) relating to service “Unclaimed” is not similarly amended with respect to returns stating both “Unclaimed” and other reasons for failure of delivery; however, division (D) continues to apply only to U.S. Postal Service returns showing that the addressee was notified of, and failed to claim, the certified or express mail envelope.

Plain-English Summary

Division (A) allows process to be served anywhere in Ohio and, when a statute or another rule authorizes it, outside the state as well. Division (B) lets a court amend a defective summons or a flawed proof of service at any time, on whatever terms are just, unless the change would materially prejudice the substantial rights of the person the process was issued against.

Divisions (C) and (D) draw a sharp line between two ways certified or express mail, or commercial carrier service, can fail. A refusal means the envelope or the process server’s return shows the defendant turned the delivery away; an unclaimed return means the defendant never picked it up. Failing to claim certified or express mail is not the same as refusing it. Either way, the clerk must notify the attorney of record, and either way the attorney may then request a follow-up service by ordinary mail to the address in the complaint’s caption or another address supplied in writing. That mailing resets the clock: answer day becomes twenty-eight days after the certificate of mailing, and service is complete once the clerk enters the fact of mailing — though for an unclaimed follow-up, an ordinary mail envelope that comes back undelivered still triggers another notice to the attorney.

Division (E) puts the burden of tracking service on the attorney of record or the party who requested it, requiring timely written instructions to the clerk about how to complete service, regardless of any notice duty the clerk otherwise owes.

Frequently Asked Questions

What is the difference between service being “refused” and “unclaimed” under Rule 4.6?

Refused means the envelope or the process server’s return shows the defendant affirmatively turned away the delivery. Unclaimed means the defendant never picked up the certified or express mail. Failing to claim mail is not treated as a refusal.

What happens after certified mail service is refused or unclaimed?

The clerk notifies the attorney of record. The attorney may then request, in writing, that the clerk send a follow-up copy of the summons and complaint by ordinary mail, which resets the answer date to twenty-eight days after the mailing.

Can a defective summons or proof of service be fixed after the fact?

Yes. Rule 4.6(B) lets the court allow an amendment to the process or the proof of service at any time, on fair terms, unless doing so would materially prejudice the substantial rights of the party the process was issued against.

Source & verification. The rule text, Effective Date, Amended dates, and Staff Notes are reproduced verbatim from the official Ohio Rules of Civil Procedure (Ohio R. Civ. P. 4.6). Prescribed by the Supreme Court of Ohio (Ohio Constitution, Art. IV, § 5(B)). The plain-English summary is original and written by us. Last verified July 1, 2026. · Official source

Also known as: service refusedunclaimed certified mailordinary mail follow-up serviceamendment of process