Register a domain and get email live in minutes — or skip DNS entirely

Why it fits

What you get

Register without leaving the dashboard

Search availability and register a new domain from MailKite — no separate registrar account, no copy-pasting nameservers.

DNS provisioned automatically

SPF, DKIM, and MX are set up as part of registration, so a newly registered domain is typically verified immediately — no manual records to paste.

Or skip owning a domain

Claim a free MailKite subdomain and send and receive today, then move to your own domain later without changing your integration.

Same account, same quota

A newly registered domain or a managed subdomain works exactly like any other domain on your account — same API, same webhook, same free tier.

How it works

Three steps to live

1

Check availability

Search a domain name from the dashboard (or the API) and see what's available to register.
2

Register it

Register the domain in your name — MailKite provisions the mail DNS as part of the flow, so there's no separate DNS step.
3

Start sending and receiving

The domain is typically verified the moment it's registered — create a mailbox, a route, or start calling the Send API right away.

Show me

check and register

Registration and mail DNS happen together — no nameserver copy-paste, no waiting on propagation.

check and register

Dashboard → Domains → [ Register a domain ]
Search   myapp.dev
         ● available — price shown before you confirm
Click  [ Register ]

SPF, DKIM, and MX are provisioned for you — usually
verified the moment registration completes.

Check whether myapp.dev is available to register — if it is,
register it and set it up for email.

import { MailKite } from "mailkite";

const mk = new MailKite(process.env.MAILKITE_API_KEY);

// Read-only — no charge.
const check = await mk.checkDomainAvailability("myapp.dev");

if (check.available) {
  // Charges your card, then provisions SPF/DKIM/MX and adds the
  // domain to your account in the same call.
  const res = await mk.registerDomain({
    domain: "myapp.dev",
    contact: {
      firstName: "Ada", lastName: "Lovelace",
      email: "ada@example.com", phone: "+1.4155551234",
      address: "1 Main St", city: "San Francisco",
      zip: "94105", country: "US",
    },
  });
}

import os
from mailkite import MailKite

mk = MailKite(os.environ["MAILKITE_API_KEY"])

# Read-only — no charge.
check = mk.checkDomainAvailability("myapp.dev")

if check["available"]:
    # Charges your card, then provisions SPF/DKIM/MX and adds the
    # domain to your account in the same call.
    res = mk.registerDomain({
        "domain": "myapp.dev",
        "contact": {
            "firstName": "Ada", "lastName": "Lovelace",
            "email": "ada@example.com", "phone": "+1.4155551234",
            "address": "1 Main St", "city": "San Francisco",
            "zip": "94105", "country": "US",
        },
    })

<?php
$mk = new \MailKite\Client(getenv('MAILKITE_API_KEY'));

// Read-only — no charge.
$check = $mk->checkDomainAvailability('myapp.dev');

if ($check['available']) {
    // Charges your card, then provisions SPF/DKIM/MX and adds the
    // domain to your account in the same call.
    $res = $mk->registerDomain([
        'domain' => 'myapp.dev',
        'contact' => [
            'firstName' => 'Ada', 'lastName' => 'Lovelace',
            'email' => 'ada@example.com', 'phone' => '+1.4155551234',
            'address' => '1 Main St', 'city' => 'San Francisco',
            'zip' => '94105', 'country' => 'US',
        ],
    ]);
}

MailKite mk = new MailKite(System.getenv("MAILKITE_API_KEY"));

// Read-only — no charge.
Object check = mk.checkDomainAvailability("myapp.dev");

// Charges your card, then provisions SPF/DKIM/MX and adds the
// domain to your account in the same call.
Object res = mk.registerDomain(Map.of(
    "domain", "myapp.dev",
    "contact", Map.of(
        "firstName", "Ada", "lastName", "Lovelace",
        "email", "ada@example.com", "phone", "+1.4155551234",
        "address", "1 Main St", "city", "San Francisco",
        "zip", "94105", "country", "US")
));

mk := mailkite.New(os.Getenv("MAILKITE_API_KEY"))

// Read-only — no charge.
check, err := mk.CheckDomainAvailability("myapp.dev")

// Charges your card, then provisions SPF/DKIM/MX and adds the
// domain to your account in the same call.
res, err := mk.RegisterDomain(map[string]any{
	"domain": "myapp.dev",
	"contact": map[string]any{
		"firstName": "Ada", "lastName": "Lovelace",
		"email": "ada@example.com", "phone": "+1.4155551234",
		"address": "1 Main St", "city": "San Francisco",
		"zip": "94105", "country": "US",
	},
})

require "mailkite"

mk = Mailkite::Client.new(ENV["MAILKITE_API_KEY"])

# Read-only — no charge.
check = mk.checkDomainAvailability("myapp.dev")

if check["available"]
  # Charges your card, then provisions SPF/DKIM/MX and adds the
  # domain to your account in the same call.
  res = mk.registerDomain(
    "domain" => "myapp.dev",
    "contact" => {
      "firstName" => "Ada", "lastName" => "Lovelace",
      "email" => "ada@example.com", "phone" => "+1.4155551234",
      "address" => "1 Main St", "city" => "San Francisco",
      "zip" => "94105", "country" => "US"
    }
  )
end

# Check availability and price — read-only, no charge.
curl "https://api.mailkite.dev/api/domains/register/check?domain=myapp.dev" \
  -H "Authorization: Bearer $MAILKITE_API_KEY"

# Register it — charges your card, then provisions SPF/DKIM/MX
# and adds the domain to your account in the same call.
curl https://api.mailkite.dev/api/domains/register \
  -H "Authorization: Bearer $MAILKITE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "domain": "myapp.dev",
    "contact": {
      "firstName": "Ada", "lastName": "Lovelace",
      "email": "ada@example.com", "phone": "+1.4155551234",
      "address": "1 Main St", "city": "San Francisco",
      "zip": "94105", "country": "US"
    }
  }'

Install Docs →

what comes back

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

{
  "domain": { "id": "dom_…", "domain": "myapp.dev", "status": "verified" },
  "dns": [
    { "type": "MX",  "name": "myapp.dev", "value": "mx.mailkite.dev", "priority": 10 },
    { "type": "TXT", "name": "myapp.dev", "value": "v=spf1 include:mailkite.dev ~all" },
    { "type": "TXT", "name": "mailkite._domainkey.myapp.dev", "value": "v=DKIM1; k=rsa; p=…" }
  ],
  "registration": { "status": "registered", "reference": "reg_…" },
  "dnsProvisioned": true,
  "charge": { "amount": 1200, "currency": "usd", "status": "captured" }
}

In the box

What's included

Domain availability + price search
Register a new domain from the dashboard or API
SPF/DKIM/MX provisioned automatically
Free managed MailKite subdomain
Usually verified the moment it's registered
Same API, quota, and dashboard as any domain

Questions

Do I have to register through MailKite?

No — bring any domain you already own and point its MX/SPF/DKIM at MailKite instead. Registering through MailKite is for when you don't have a domain yet and want the purchase and DNS handled in one step.

Is registering a domain through MailKite free?

No — you pay the registrar cost for the domain itself (shown before you confirm), charged to your card on file. What's free is the mail DNS: SPF, DKIM, and MX are provisioned automatically as part of registration.

What is a free MailKite subdomain for?

It's a free, instantly-verified subdomain for testing or launching before you've settled on (or paid for) a real domain — sending and receiving both work immediately.

Can I move from a MailKite subdomain to my own domain later?

Yes — add and verify your own domain whenever you're ready and switch addresses over; your API integration and account don't change.

Keep reading

Domains & DNS docs Business email on your domain Inbound email → webhook

Ready to build?

Start free on unlimited domains — no credit card. Or browse the other solutions.

Start building free All solutions

A new product's email, live in minutes.

What you get

Register without leaving the dashboard

DNS provisioned automatically

Or skip owning a domain

Same account, same quota

Three steps to live

Check availability

Register it

Start sending and receiving

check and register

What's included

Questions

Keep reading

Ready to build?