Sending domain

Before any campaign or journey can send, your account needs a verified sending domain: a subdomain you control (for example send.yourcompany.com) that you point at Mercleo's mail provider with DNS records. Settings, under Sending, shows you the domain's status, but the domain itself is added and verified once for your whole Mercleo account in Account settings.

Where the domain is managed

The sending domain is account-level, shared infrastructure: one domain serves every Mercleo product that sends mail, including Marketing, Events, and Reach. Because of that, it is added, verified, and removed in one place only: Account settings. This page surfaces the status and deep-links you there; it never edits or deletes the domain itself.

On the Sending domain card here, the button reads Set up in Account settings when no domain exists, and Manage in Account settings once one is added. Both open Account settings in a new tab.

Adding and verifying the domain in Account settings

This is an account-level setup step, not a Marketing setting: it lives in Account settings because the domain serves every product, not just Marketing. Open the Sending domain card there and enter a dedicated subdomain in the Domain field, then click Add sending domain. The entry must be a valid hostname; an invalid value is rejected with "Enter a valid domain (e.g. send.yourco.com)."

Once added, the card shows a DNS records to set table with the Type, Host / Name, and Value for each record. Add those records with your DNS provider, give them a few minutes to propagate, then click Verify. On success the card confirms "Domain verified. You can now send email from this domain."

You do not always have to click Verify. Once your DNS records propagate, the domain is detected as verified the next time the status is read, and the verification date is stamped automatically.

Reading the status here

The Sending domain card shows one of three states. When a domain is verified, a green Verified badge appears, the domain name is shown in monospace, and the verification date is listed below it (for example, "Verified 6/21/2026.").

When a domain is added but DNS is not yet confirmed, a neutral Pending DNS badge appears with the note "DNS verification is still pending. Finish setup in Account settings, then this domain can send." When no domain exists at all, the card shows "No sending domain yet" with a prompt to set one up.

Why sending is blocked without a verified domain

Every From address a campaign sends from lives on this domain, so until the domain is verified, or was verified at some earlier point, there is no address to send from. You cannot add From addresses while the domain is unverified, and the campaign composer's From step shows the message "No verified sender addresses yet. Add one in Settings → Sending before sending this campaign." Journeys are gated the same way: an unverified domain blocks a journey's email step from sending, not only a campaign.

Changing or removing the domain

Removing or replacing the domain is done in Account settings, where the verified view has a Remove domain button. Your From addresses store only the part before the @ (the local part); the full address is composed onto whatever domain is currently verified each time it is read. A domain change recomposes every existing From address onto the new domain, so none of them go stale.

Unsubscribe and preference-centre links already sent in earlier emails keep working through a domain or product URL change: they redirect automatically to their current destination.