Who may serve a summons and complaint in New Mexico?

Any adult who is 18 or older and not a party to the case may serve it, and so may a sheriff or deputy sheriff of a New Mexico county (Rule 1-004(D)(1) NMRA).

Can a party serve their own summons in New Mexico?

No. Rule 1-004(D)(1) NMRA requires the server to be over eighteen and not a party to the action, so a party cannot serve their own summons and complaint.

Does New Mexico have an official proof of service form?

Yes. The official Summons, Form 4-206 NMRA, must be substantially in the Supreme Court-approved form and includes a Return section on its back that doubles as the proof of service. New Mexico has no separate numbered proof-of-service form; if the issuing court requires its own version, that court's form controls.

Does a New Mexico proof of service need to be notarized?

It depends on who serves. Proof of service must be a notarized affidavit unless a sheriff or deputy sheriff of a New Mexico county serves, in which case a certificate suffices without notarization (Rule 1-004(L) NMRA). New Mexico's only unsworn-declaration statute covers just a declarant signing outside the United States, so it cannot substitute for a notary for a server within the country.

How long do I have to serve a summons in New Mexico?

New Mexico sets no numeric deadline. Rule 1-004(C)(2) NMRA requires only that service be made with reasonable diligence, unlike the fixed day counts used in federal court and some other states.

Is there a deadline to file the proof of service in New Mexico?

No fixed day count. Rule 1-004(L) NMRA requires only that the party obtaining service, or that party's agent, promptly file the proof of service. Failure to file it does not affect the validity of service itself, though a court needs the proof on file before entering a default judgment in practice.

Can a New Mexico court allow service by social media, e-mail, or text message?

Yes, for cases filed on or after December 31, 2025. A court may order service of the summons and complaint by social media direct message, e-mail, or text message, with required scripted statutory content and a first-class-mail follow-up within 10 days, repeated weekly for three weeks (Rule 1-004(F)(4) NMRA). It is available only by court order, not as a method a server may choose alone.

How do I serve later papers like motions in a New Mexico case?

Later papers go to the attorney of record if the party is represented, otherwise to the party, by delivery, leaving a copy at the office or dwelling, fax where the conditions of Rule 1-005.1 NMRA are met, electronic service under Rule 1-005.2 NMRA, or first-class mail, which is complete upon mailing. A certificate of service stating the date and method must be filed with the paper (Rule 1-005(A), (B), (E) NMRA).

What happens if service of a New Mexico summons is defective?

Defective service can prevent the court from gaining jurisdiction over the defendant, which can void a default judgment later. Follow New Mexico's manner, timing, and proof requirements in Rule 1-004 NMRA exactly, and never sign a proof of service that misstates how or when service occurred, since it is sworn testimony.

Does this New Mexico proof of service cover federal court, service abroad, or a government defendant?

No. Service on the federal government, a foreign country, or under the Hague Service Convention, and service in federal court under the Federal Rules of Civil Procedure, follow separate rules not covered on this page.

New Mexico Proof of Service

Q: Is ordinary mail enough to serve a New Mexico summons?

No. Ordinary first-class mail with no signature required does not by itself serve a New Mexico summons. Mail or commercial courier service only completes service if the envelope is addressed to the defendant and the defendant or an authorized person signs a delivery receipt, with service complete on the date the receipt is signed (Rule 1-004(E)(3), (F)(1)(b) NMRA); ordinary first-class mail is used only as the required follow-up mailing after substituted service.

New Mexico lets any adult non-party serve a summons, but the proof must be a notarized affidavit unless a sheriff or deputy sheriff of a New Mexico county serves it, and the rule sets no numeric deadline to complete service at all.

Find out where you stand in New Mexico

Where are you with service?

DocDraft provides document preparation, not legal advice.

Introduction

In New Mexico, any adult 18 or older and not a party to the case may serve the summons and complaint, and so may a sheriff or deputy sheriff of a New Mexico county; a party cannot serve their own summons (Rule 1-004(D)(1) NMRA). The official Summons, Form 4-206 NMRA, must substantially match the Supreme Court-approved form and carries a Return on its back that doubles as the proof of service; the court's version controls if required. Proof must be a notarized affidavit unless a sheriff or deputy sheriff of a New Mexico county serves, who instead certifies without notarization (Rule 1-004(L) NMRA). New Mexico's only unsworn-declaration statute covers a declarant signing outside the United States, so it cannot substitute for a notary here. Mail or courier service is valid only if addressed to the defendant and the defendant or an authorized person signs a delivery receipt, with service complete on that date. Ordinary first-class mail alone does not complete service; it is only a required follow-up mailing after substituted service (Rule 1-004(E)-(F) NMRA). New Mexico sets no numeric deadline to serve the summons, only reasonable diligence under Rule 1-004(C)(2), and no fixed day count to file the proof, though it must be filed promptly (Rule 1-004(L)). Later papers go to the attorney of record if represented, otherwise the party, with a certificate of service (Rule 1-005). Federal, foreign, and government service follow separate rules not covered here. The proof is sworn, so never misstate service facts. Attorney review is available before filing.

Key Things to Know

1
Any adult who is 18 or older and not a party to the case may serve the summons and complaint, and so may a sheriff or deputy sheriff of a New Mexico county; a party cannot serve their own summons (Rule 1-004(D)(1) NMRA). The official Summons, Form 4-206 NMRA, must be substantially in the Supreme Court-approved form and carries a built-in Return on its back that doubles as the proof of service; the issuing court's version controls.
2
Proof of service must be a notarized affidavit unless the sheriff or a deputy sheriff of a New Mexico county serves, in which case a certificate suffices without notarization (Rule 1-004(L) NMRA). New Mexico's only unsworn-declaration statute, the Uniform Unsworn Foreign Declarations Act, covers only a declarant signing outside the United States, so it cannot substitute for a notary for a server within the country.
3
Mail or commercial courier service is a first-tier method for the summons, not a fallback, but only if the envelope is addressed to the defendant and the defendant or an authorized person signs a delivery receipt; service is complete on the date the receipt is signed. Ordinary first-class mail with no signature required does not complete service of a summons by itself (Rule 1-004(E)(3), (F)(1)(b) NMRA).
4
If personal or signed-receipt mail service fails, a copy may be left with a person over 15 residing at the defendant's usual place of abode, plus mailing a copy by first-class mail to the defendant's last known address; if that also fails, service may be made at the defendant's workplace on the person apparently in charge, plus mailing copies to both the last known mailing address and the business address (Rule 1-004(F)(2)-(3) NMRA).
5
If service cannot reasonably be made by the standard methods, a court may order service by another method or combination of methods, including publication once a week for three consecutive weeks in a newspaper of general circulation. For cases filed on or after December 31, 2025, a court may also order service of the summons and complaint by social media direct message, e-mail, or text message, with required scripted content and a follow-up first-class mailing within 10 days, repeated weekly for three weeks (Rule 1-004(F)(4), (J)-(K) NMRA).
6
New Mexico sets no numeric deadline to serve the summons; Rule 1-004(C)(2) NMRA requires only that service be made with reasonable diligence. There is also no fixed day count to file the proof of service, only that the party obtaining service promptly file it, though a court needs the proof on file before entering a default in practice (Rule 1-004(L) NMRA).
7
Later papers such as motions go to the attorney of record if the party is represented, otherwise to the party, and must be filed with a certificate of service stating the date and method (Rule 1-005(A), (B), (E) NMRA). District Court has no separate numbered certificate-of-service form; the certificate is drafted as part of the pleading itself.

Key decisions before you file

Before you file a Proof of Service in New Mexico, a few decisions shape the document: which option to choose and what each one means. The Proof of Service guide walks through them.

Open the Proof of Service guide

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STATE OF NEW MEXICO COUNTY OF [COUNTY] [JUDICIAL DISTRICT] JUDICIAL DISTRICT COURT

[PLAINTIFF NAME], Plaintiff, v. No. [CASE NUMBER] [DEFENDANT NAME], Defendant.

RETURN AND PROOF OF SERVICE

New Mexico's official Summons, Form 4-206 NMRA, includes its own Return section, and the summons must be substantially in the Supreme Court-approved form. If the issuing court requires its own version, that court's form controls instead of this one.

I received the summons and complaint for service on [DATE RECEIVED].

METHOD OF SERVICE

[IF APPLICABLE: PERSONAL SERVICE. I personally delivered a copy of the summons and complaint, and [LIST OF ADDITIONAL PAPERS SERVED, IF ANY], to [NAME OF DEFENDANT] on [DATE OF SERVICE] at [TIME OF SERVICE], at [ADDRESS OF SERVICE], as Rule 1-004(F)(1)(a) NMRA requires. [IF APPLICABLE: [NAME OF DEFENDANT] refused to accept the papers, so I left them at that location, as Rule 1-004(F)(1)(a) NMRA allows.]]

[IF APPLICABLE: MAIL OR COMMERCIAL COURIER SERVICE. I mailed the summons and complaint, addressed to [NAME OF DEFENDANT], by [MAIL OR COMMERCIAL COURIER SERVICE] on [DATE MAILED]. [NAME OF DEFENDANT OR AUTHORIZED RECIPIENT] signed a delivery receipt on [DATE RECEIPT SIGNED], as Rule 1-004(E)(3), (F)(1)(b) NMRA requires. The signed receipt is attached.]

[IF APPLICABLE: ABODE OR BUSINESS SERVICE. After an unsuccessful attempt at personal or signed-receipt mail service, I left a copy with [NAME OF PERSON, OVER 15 YEARS OF AGE, OR PERSON APPARENTLY IN CHARGE] at [DEFENDANT'S USUAL PLACE OF ABODE OR ACTUAL PLACE OF BUSINESS] on [DATE OF SERVICE], and mailed a copy by first-class mail to [DEFENDANT'S LAST KNOWN MAILING ADDRESS] [IF BUSINESS SERVICE: and a copy to [DEFENDANT'S BUSINESS ADDRESS]] on [DATE MAILED], as Rule 1-004(F)(2)-(3) NMRA requires.]

[IF APPLICABLE: COURT-ORDERED SERVICE. Under the order of [COURT] dated [DATE OF ORDER], I served the defendant by [COURT-ORDERED METHOD] on [DATE OF SERVICE], as Rule 1-004(J) NMRA allows. [IF SOCIAL MEDIA, E-MAIL, OR TEXT MESSAGE: I mailed a first-class follow-up copy to [DEFENDANT'S LAST KNOWN ADDRESS] on [DATE OF FOLLOW-UP MAILING], as Rule 1-004(F)(4) NMRA requires.]]

SERVER INFORMATION

Server: [NAME OF SERVER], over eighteen (18) years of age and not a party to this action.

[IF APPLICABLE: I am a sheriff or deputy sheriff of [COUNTY] County, New Mexico, and I submit this proof by certificate, which Rule 1-004(L) NMRA does not require to be notarized.

[SIGNATURE OF SHERIFF OR DEPUTY] [PRINTED NAME] [DATE]]

AFFIDAVIT OF SERVICE

[IF APPLICABLE: I declare under oath that the foregoing is a true statement of the manner and date of service described above, as Rule 1-004(L) NMRA requires.

[SIGNATURE OF SERVER] [PRINTED NAME OF SERVER] [ADDRESS OF SERVER]

Subscribed and sworn to before me on [DATE] by [NAME OF SERVER].

[SIGNATURE OF NOTARY PUBLIC] Notary Public, State of New Mexico My commission expires: [DATE]]

CERTIFICATE OF SERVICE OF LATER PAPERS

[IF APPLICABLE: I certify that on [DATE], I served a copy of [NAME OF DOCUMENT] on [NAME OF ATTORNEY OF RECORD OR PARTY] by [METHOD, INCLUDING DELIVERY, LEAVING A COPY AT THE OFFICE OR DWELLING, FIRST-CLASS MAIL, FAX UNDER RULE 1-005.1 NMRA, OR ELECTRONIC SERVICE UNDER RULE 1-005.2 NMRA], at [ADDRESS, FAX NUMBER, OR E-MAIL ADDRESS], as Rule 1-005 NMRA requires.

[SIGNATURE] [PRINTED NAME]]

New Mexico Requirements for Proof of Service

Any Adult Non-Party May Serve
Any adult who is 18 or older and not a party to the case may serve a summons and complaint, and so may a sheriff or deputy sheriff of a New Mexico county (Rule 1-004(D)(1) NMRA).
Party Barred From Serving the Summons
A party to the case cannot serve their own summons and complaint; Rule 1-004(D)(1) NMRA requires the server to be over eighteen and not a party.
Notarized Affidavit Unless a Sheriff Serves
Proof of service must be a notarized affidavit unless the sheriff or a deputy sheriff of a New Mexico county serves, in which case a certificate suffices without notarization (Rule 1-004(L) NMRA). New Mexico's only unsworn-declaration statute covers solely a declarant signing outside the United States (NMSA 1978 §§ 44-10-1 to -8).
Signed Receipt Required for Mail Service
Mail or commercial courier service completes service of a summons only if the envelope is addressed to the defendant and the defendant or an authorized person signs a delivery receipt; service is complete on the date the receipt is signed. Ordinary first-class mail alone does not complete service (Rule 1-004(E)(3), (F)(1)(b) NMRA).
No Numeric Deadline to Serve
New Mexico sets no fixed day count to serve the summons; Rule 1-004(C)(2) NMRA requires only that service be made with reasonable diligence.
Prompt Filing of the Proof of Service
The party obtaining service, or that party's agent, must promptly file the proof of service, with no fixed day count. Failure to file it does not affect the validity of service itself (Rule 1-004(L) NMRA).
Combined Summons and Return, Form 4-206
New Mexico has no separate numbered proof-of-service form; the official Summons, Form 4-206 NMRA, carries the Return that serves as the proof of service on its reverse and must be substantially in the Supreme Court-approved form. The issuing court's version controls if it requires one.
Court-Ordered Social Media, E-mail, or Text Service
For cases filed on or after December 31, 2025, a court may order service of the summons and complaint by social media direct message, e-mail, or text message, with required scripted content and a first-class-mail follow-up within 10 days, repeated weekly for three weeks (Rule 1-004(F)(4) NMRA).
Certificate of Service for Later Papers
Later papers such as motions must be filed with a certificate of service stating the date and method, going to the attorney of record if the party is represented, otherwise to the party (Rule 1-005(A), (B), (E) NMRA).

Find out where you stand in New Mexico

Introduction

Key Things to Know

Key decisions before you file

Customize your Proof of Service Template with DocDraft

New Mexico Requirements for Proof of Service

Any Adult Non-Party May Serve

Party Barred From Serving the Summons

Notarized Affidavit Unless a Sheriff Serves

Signed Receipt Required for Mail Service

No Numeric Deadline to Serve

Prompt Filing of the Proof of Service

Combined Summons and Return, Form 4-206

Court-Ordered Social Media, E-mail, or Text Service

Certificate of Service for Later Papers

Frequently Asked Questions