Static Forms - Secure form backend and form endpoint for contact forms
Pro

Custom Domain

Register and verify sending domains. Forms attach to verified domains individually.

Custom Domain in Workspace is where you register the domains your forms can send from. You set up DNS once per domain — then any form in the workspace can attach to it from its own Custom domain tab.

Two pages, one workflow

Register here (workspace-level DNS verification). Attach there (per-form). The separation lets one verified domain power many forms with different sender names.

Adding a domain

1

Click Add domain

Enter the domain you want to send from, for example example.com. The default sender becomes forms@example.com, and the default mailed-by domain becomesmail.example.com.
2

Customize only if you need to

Open Customize sender details to change the default sender address or the mailed-by subdomain. Most workspaces can keep forms and mail.
3

Copy the DNS records

Add the CNAME records for DKIM, the ownership TXT record, and the MX and SPF records for the mailed-by domain at Cloudflare, Route 53, Namecheap, GoDaddy, or your DNS provider. You can copy each value or copy the complete record set. Static Forms checks the mailed-by hostname first. If one SPF record already exists, the value shown here safely combines its existing senders with Amazon SES.
4

Let Static Forms check the setup

The open domain card checks DNS every 30 seconds. You can also click Check DNS now. Verification usually completes in minutes, but can take up to 72 hours for slow providers. Once every record is found, the domain is enabled automatically.
5

Attach the domain to a form

Once verified, open any form's Custom domain tab and pick this domain from the dropdown.

Already verified a domain?

Open its domain card and choose Set up mailed-by. Your existing From address keeps working while the two new MX and SPF records propagate; there is no need to remove or re-verify the domain from scratch.

View states

  • Upsell — visible to Free/Trial tiers. Shows what custom domains do and links to pricing.
  • Read-only — visible to team members who aren't the workspace owner. Lists domains and statuses, no edit actions.
  • Manage — visible to the workspace owner on Pro and above. Add, verify, and remove domains.

Verifying DNS records

Each domain card lists every required record with a copy button and a status pill (Pending / Verified / Failed). DKIM authenticates the visible From address. The mailed-by MX and SPF records authenticate the envelope sender and keep it on your domain. If verification fails:

  • Confirm the host/name field is correct (some providers want the leaf, others want the full FQDN).
  • Wait — DNS can take time to propagate.
  • Click Recheck to force a fresh poll.

Keep SPF as one record

Never add a second SPF record at the same hostname. When Static Forms finds one existing SPF policy, replace it with the combined value shown in the domain card. If it finds multiple SPF records or existing mail routing, setup pauses and suggests a different mailed-by prefix instead of risking your current email service.

Recommended DMARC monitoring

Static Forms checks your From domain and its parent domains for an existing DMARC policy. Existing policies are left unchanged. If none is found, the domain card recommends the optional monitoring policy v=DMARC1; p=none. DMARC does not block Static Forms verification. Add a reporting address only when you have a mailbox or DMARC service that will process the reports.

Removing a domain

Removing a domain immediately stops any form attached to it from using it — those forms fall back to the default no-reply@staticforms.dev sender until you attach a different domain. Forms aren't broken, just defaulted.

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