Create Domain

POST

domains

Node.js

import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.domains.create({ name: 'example.com' });

PHP

$resend = Resend::client('re_xxxxxxxxx');

$resend->domains->create([
  'name' => 'example.com'
]);

Python

import resend

resend.api_key = "re_xxxxxxxxx"

params: resend.Domains.CreateParams = {
  "name": "example.com",
}

resend.Domains.create(params)

Ruby

require "resend"

Resend.api_key = "re_xxxxxxxxx"

params = {
  name: "example.com",
}
domain = Resend::Domains.create(params)
puts domain

package main

import "github.com/resend/resend-go/v4"

func main() {
	client := resend.NewClient("re_xxxxxxxxx")

	params := &resend.CreateDomainRequest{
		Name: "example.com",
	}

	client.Domains.Create(params)
}

Rust

use resend_rs::{types::CreateDomainOptions, Resend, Result};

#[tokio::main]
async fn main() -> Result<()> {
  let resend = Resend::new("re_xxxxxxxxx");

  let _domain = resend
    .domains
    .create(CreateDomainOptions::new("example.com"))
    .await?;

  Ok(())
}

Java

import com.resend.Resend;
import com.resend.core.exception.ResendException;
import com.resend.services.domains.model.CreateDomainOptions;
import com.resend.services.domains.model.CreateDomainResponse;

public class Main {
    public static void main(String[] args) throws ResendException {
        Resend resend = new Resend("re_xxxxxxxxx");

        CreateDomainOptions params = CreateDomainOptions
                .builder()
                .name("example.com").build();

        CreateDomainResponse domain = resend.domains().create(params);
    }
}

.NET

using Resend;

IResend resend = ResendClient.Create( "re_xxxxxxxxx" ); // Or from DI

var resp = await resend.DomainAddAsync( "example.com" );
Console.WriteLine( "Domain Id={0}", resp.Content.Id );

cURL

curl -X POST 'https://api.resend.com/domains' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -d $'{
  "name": "example.com"
}'

CLI

resend domains create --name example.com --region us-east-1

Response

{
  "id": "4dd369bc-aa82-4ff3-97de-514ae3000ee0",
  "name": "example.com",
  "created_at": "2026-03-28 17:12:02.059593+00",
  "status": "not_started",
  "open_tracking": true,
  "click_tracking": false,
  "tracking_subdomain": "links",
  "capabilities": {
    "sending": "enabled",
    "receiving": "disabled"
  },
  "records": [
    {
      "record": "DKIM",
      "name": "resend._domainkey",
      "value": "p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDsc4Lh8xilsngyKEgN2S84+21gn+x6SEXtjWvPiAAmnmggr5FWG42WnqczpzQ/mNblqHz4CDwUum6LtY6SdoOlDmrhvp5khA3cd661W9FlK3yp7+jVACQElS7d9O6jv8VsBbVg4COess3gyLE5RyxqF1vYsrEXqyM8TBz1n5AGkQIDAQA2",
      "type": "TXT",
      "status": "not_started",
      "ttl": "Auto"
    },
    {
      "record": "SPF",
      "name": "send",
      "type": "MX",
      "ttl": "Auto",
      "status": "not_started",
      "value": "feedback-smtp.us-east-1.amazonses.com",
      "priority": 10
    },
    {
      "record": "SPF",
      "name": "send",
      "value": "v=spf1 include:amazonses.com ~all",
      "type": "TXT",
      "ttl": "Auto",
      "status": "not_started"
    },
    {
      "record": "Tracking",
      "type": "CNAME",
      "name": "links",
      "value": "links1.resend-dns.com",
      "ttl": "Auto",
      "status": "not_started"
    }
  ],
  "region": "us-east-1"
}

Body Parameters

string

required

The name of the domain you want to create.

string

default:"us-east-1"

The region where emails will be sent from. Possible values: 'us-east-1' | 'eu-west-1' | 'sa-east-1' | 'ap-northeast-1'

string

default:"opportunistic"

opportunistic: Opportunistic TLS means that it always attempts to make a secure connection to the receiving mail server. If it can’t establish a secure connection, it sends the message unencrypted.
enforced: Enforced TLS on the other hand, requires that the email communication must use TLS no matter what. If the receiving server does not support TLS, the email will not be sent.

object

Configure the domain capabilities for sending and receiving emails. At least one capability must be enabled.

Show properties

string

default:"enabled"

Enable or disable sending emails from this domain. Possible values: 'enabled' | 'disabled'

string

default:"disabled"

Enable or disable receiving emails to this domain. Possible values: 'enabled' | 'disabled'

Node.js

import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.domains.create({ name: 'example.com' });

PHP

$resend = Resend::client('re_xxxxxxxxx');

$resend->domains->create([
  'name' => 'example.com'
]);

Python

import resend

resend.api_key = "re_xxxxxxxxx"

params: resend.Domains.CreateParams = {
  "name": "example.com",
}

resend.Domains.create(params)

Ruby

require "resend"

Resend.api_key = "re_xxxxxxxxx"

params = {
  name: "example.com",
}
domain = Resend::Domains.create(params)
puts domain

package main

import "github.com/resend/resend-go/v4"

func main() {
	client := resend.NewClient("re_xxxxxxxxx")

	params := &resend.CreateDomainRequest{
		Name: "example.com",
	}

	client.Domains.Create(params)
}

Rust

use resend_rs::{types::CreateDomainOptions, Resend, Result};

#[tokio::main]
async fn main() -> Result<()> {
  let resend = Resend::new("re_xxxxxxxxx");

  let _domain = resend
    .domains
    .create(CreateDomainOptions::new("example.com"))
    .await?;

  Ok(())
}

Java

import com.resend.Resend;
import com.resend.core.exception.ResendException;
import com.resend.services.domains.model.CreateDomainOptions;
import com.resend.services.domains.model.CreateDomainResponse;

public class Main {
    public static void main(String[] args) throws ResendException {
        Resend resend = new Resend("re_xxxxxxxxx");

        CreateDomainOptions params = CreateDomainOptions
                .builder()
                .name("example.com").build();

        CreateDomainResponse domain = resend.domains().create(params);
    }
}

.NET

using Resend;

IResend resend = ResendClient.Create( "re_xxxxxxxxx" ); // Or from DI

var resp = await resend.DomainAddAsync( "example.com" );
Console.WriteLine( "Domain Id={0}", resp.Content.Id );

cURL

curl -X POST 'https://api.resend.com/domains' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -d $'{
  "name": "example.com"
}'

CLI

resend domains create --name example.com --region us-east-1

JSON

{
  "id": "4dd369bc-aa82-4ff3-97de-514ae3000ee0",
  "name": "example.com",
  "created_at": "2026-03-28 17:12:02.059593+00",
  "status": "not_started",
  "open_tracking": true,
  "click_tracking": false,
  "tracking_subdomain": "links",
  "capabilities": {
    "sending": "enabled",
    "receiving": "disabled"
  },
  "records": [
    {
      "record": "DKIM",
      "name": "resend._domainkey",
      "value": "p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDsc4Lh8xilsngyKEgN2S84+21gn+x6SEXtjWvPiAAmnmggr5FWG42WnqczpzQ/mNblqHz4CDwUum6LtY6SdoOlDmrhvp5khA3cd661W9FlK3yp7+jVACQElS7d9O6jv8VsBbVg4COess3gyLE5RyxqF1vYsrEXqyM8TBz1n5AGkQIDAQA2",
      "type": "TXT",
      "status": "not_started",
      "ttl": "Auto"
    },
    {
      "record": "SPF",
      "name": "send",
      "type": "MX",
      "ttl": "Auto",
      "status": "not_started",
      "value": "feedback-smtp.us-east-1.amazonses.com",
      "priority": 10
    },
    {
      "record": "SPF",
      "name": "send",
      "value": "v=spf1 include:amazonses.com ~all",
      "type": "TXT",
      "ttl": "Auto",
      "status": "not_started"
    },
    {
      "record": "Tracking",
      "type": "CNAME",
      "name": "links",
      "value": "links1.resend-dns.com",
      "ttl": "Auto",
      "status": "not_started"
    }
  ],
  "region": "us-east-1"
}

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