4:4-7. Return

The person serving the process shall make proof of service thereof on the original process and on the copy. Proof of service shall be promptly filed with the court within the time during which the person served must respond thereto either by the person making service or by the party on whose behalf service is made. The proof of service, which shall be in a form prescribed by the Administrative Director of the Courts, shall state the name of the person served and the place, mode and date of service, and a copy thereof shall be forthwith furnished plaintiff's attorney by the person serving process. If service is made upon a member of the household pursuant to R. 4:4-4 that person's name shall be stated in the proof or, if such name cannot be ascertained, the proof shall contain a description of the person upon whom service was made. If service is made by a person other than a sheriff or a court appointee, proof of service shall be by similar affidavit which shall include the facts of the affiant's diligent inquiry regarding defendant's place of abode, business or employment. If service is made by mail, the party making service shall make proof thereof by affidavit which shall also include the facts of the failure to effect personal service and the facts of the affiant's diligent inquiry to determine defendant's place of abode, business or employment. With the proof shall be filed the affidavit or affidavits of inquiry, if any, required by R. 4:4-4 and R. 4:4-5. Where service is made by registered or certified mail and simultaneously by regular mail, the return receipt card or the unclaimed registered or certified mail shall be filed as part of the proof. Failure to make proof of service does not affect the validity of service.