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Custom Send-From Domain (White-Label Email)

Last updated: 2026-05-29

By default, all Duefy emails go out from noreply@duefy.ai with your company name as the display name (e.g. "Acme Corp via Duefy"). When you verify your own domain, the "via Duefy" suffix disappears and emails are sent from a real address on your domain (e.g. billing@acmecorp.com).

Why bother

  • Higher deliverability. Gmail / Outlook score "domain alignment" — when the From address matches the visible brand, inbox placement improves.
  • Higher trust. Recipients see the email coming from your real domain, not a third-party service.
  • Real reply routing. Replies arrive at your inbox directly, not via Duefy's bounce-forwarding shim.

Setting it up takes ~10 minutes (3 DNS records).

Setup

  1. Go to Settings → Sending domain.
  2. Enter the domain you want to send from (e.g. acmecorp.com).
  3. Enter the specific address (e.g. billing@acmecorp.com).
  4. Duefy creates a Resend domain record and shows you 3 DNS records to add:
    • MX for bounce processing
    • TXT (SPF) for sender authorization
    • TXT (DKIM) for cryptographic signing
  5. Add those records in your DNS provider (Cloudflare / Route 53 / GoDaddy etc.) — DNS propagation is typically minutes, can be up to 24h.
  6. Click Verify in Duefy. Once Resend confirms the records, the green "verified" badge replaces the pending state and reminders start sending from your domain immediately.

What stays on Duefy's domain

  • Reply-To tracking address (reply+{token}@duefy.ai) — client replies route through our inbound handler so reply detection still works.
  • Tracking pixel + click URLs — needed for open/click stats.

These are technical addresses your clients don't see in the From field.

Removing the white-label domain

If you stop wanting white-label sending, Settings → Sending domain → Remove deletes the Resend domain record. Reminders revert to noreply@duefy.ai display-name "{your company} via Duefy".

A small "Sent via Duefy — new users get $10 in Credits" line appears in the footer of every reminder, receipt, and nudge email by default. It helps spread Duefy, and you also earn $10 in Credits for each friend who signs up through your link.

If you've already verified your custom sending domain (so emails come from your own address, not noreply@duefy.ai), you can hide that footer:

  1. Go to Settings → Sending domain.
  2. Under the "Verified — sending from your domain" card, tick "Hide 'Sent via Duefy' credit on reminder emails".

The toggle is intentionally only available after the domain is verified — hiding the footer while the From address is still noreply@duefy.ai would make the email look schizophrenic to your client. Downgrade or un-verify the domain at any point and the footer comes back on automatically.

What plan do I need

White-label sender domain is available on Solo and above — not on the free trial. Verify the domain before your trial ends if you want continuity.

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