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Connect a domain

Choose a sending subdomain, publish its DNS records, and verify it — start to finish.

This guide connects a sending domain such as mail.example.com. It takes about ten minutes of work, plus DNS propagation time.

Before you start

  • Access to the DNS settings of your domain — usually your registrar, Cloudflare, or your hosting provider. Not sure where? Look up your domain's nameservers: the provider they point to is where you add records.
  • A subdomain name. We recommend mail, send, or notifications.

Connect your domain

  1. Add the domain

    In the dashboard, open Email → Domains, select Add domain, and enter the full subdomain, for example mail.example.com.

  2. Copy the DNS records

    The domain page lists every record with its type, name, and value: the DKIM records, the bounce-handling MX and SPF records on nc-bounce.mail.example.com, and an optional DMARC record. What each record does.

  3. Add them at your DNS provider

    Create each record exactly as shown. If your provider adds your domain to record names automatically, enter only the part before your root domain — for example nc-bounce.mail. Step-by-step instructions are in DNS provider setup.

  4. Verify

    Select Check status on the domain page. Each record shows its own status, so you can see which ones are confirmed. Pending domains are also re-checked automatically every 30 minutes.

  5. Send a test

    When the domain shows Verified, select Send test email and send one to yourself. Your domain is ready.

How long does it take?

Most DNS changes are visible within minutes. Some providers take up to 48 hours, depending on the record's TTL. If a domain is still pending after an hour, use Domain not verifying to find the problem.

Frequently asked questions

Can I use my root domain?

No — sending domains must be subdomains, such as mail.example.com. Your recipients still see a professional address like hello@mail.example.com, and your root domain's existing email is unaffected.

Will this affect my existing email?

No. All records are created on your sending subdomain, so the MX and SPF records that deliver mail to your root domain stay unchanged.

Do I need the DMARC record?

It is optional and never blocks sending, but recommended: mailbox providers increasingly expect DMARC. Start with p=none, then tighten the policy once you are confident all your mail is authenticated.

Can I connect several domains?

Yes. The number of domains depends on your plan. Use separate subdomains for different kinds of email to keep their reputations independent.

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