Sending Domains and DNS Setup

Verify a custom domain so marketing emails come from your address ([email protected]) with proper SPF, DKIM, DMARC, and Return-Path records.

By Terrance Bortell · Updated May 18, 2026

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Sending from your own domain — instead of a generic shared address — is what keeps your campaigns out of the spam folder. The Marketing app handles the verification and authentication setup, but you need access to your domain's DNS to add the records.

Adding a sending domain

Open Settings → Sending Domains and click "Add domain." Enter the domain you want to send from (e.g., yourtravelagency.com), the sender prefix (e.g., "hello"), and the sender display name (e.g., "Your Travel Agency"). The system generates a list of DNS records you need to add at your DNS provider.

Once you add the records, click "Verify." The system queries the email provider (Postmark or SES, depending on configuration) to confirm the records are in place. Status moves from Pending to Verified once everything passes.

The DNS records you'll need to add

How verification works

When you click Verify, the system asks the email provider whether the DNS records resolve correctly. DKIM is the slowest of the bunch because the provider has to confirm signing tokens — give DNS up to a few hours to propagate before assuming something's wrong. Status reflects what the email provider reports: Pending, Verified, or Failed.

Once verified, the domain stays verified — there's no re-check schedule. If your DNS changes break verification later, the next campaign send will fail with a clear error and the status will flip back.

Sender addresses

Verification is at the domain level. Once yourtravelagency.com is verified, you can send from [email protected], [email protected], [email protected] — any address on that domain — without re-verifying each address separately.

What is not available

Frequently Asked Questions

How long does verification take?

DNS propagation usually takes minutes but can take a few hours. If verification is still Pending after 24 hours, double-check the records at your DNS provider — most failures trace to a typo or a record being placed at the wrong subdomain.

Do I need a separate domain for marketing, or can I use my main domain?

Either works. Many agencies use a subdomain (e.g., mail.yourtravelagency.com) to keep marketing traffic separate from transactional email — but it's not required.

Will adding these DNS records affect my website or other email?

SPF and DKIM are additive — they declare another authorized sender alongside whatever else you have. DMARC is the one to review carefully because it sets policy across all senders on the domain. If you already have a DMARC record, contact your DNS administrator before changing it.

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