How-to
Adding a Mail Check DMARC button to your form
How to add the Mail Check block, what it does for the visitor, and what it scores on the contact.
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Adding a Mail Check DMARC button to your form
The Mail Check block is a one-click button you can add to any form. It runs a free DMARC and SPF check on a domain the visitor enters, shows them the result, and — because they had to enter a domain to use it — tags their contact record with that domain plus a small lead-score boost.
It's a lead-magnet block: visitors get something useful, you get a richer signal on the lead.
When to use it
Add Mail Check to:
- The form on your Contact / Demo / Pricing page if you sell anything email-related.
- A dedicated landing page for an ad campaign targeting IT and security buyers.
- Your homepage popup if your audience is technical.
How to add it
- Open the form builder for an existing form, or create a new one.
- Drag in the Mail Check block from the palette.
- Position it wherever makes sense — usually after the email field, so the visitor's already invested.
- Publish.
There's no config beyond placement. The block handles its own UX — input field, button, results panel.
What the visitor sees
- A small field labelled "Check your domain's email security".
- A button: "Run check".
- When they click, we run a live DMARC + SPF + DKIM lookup against the domain and show the result inline: pass / warning / fail, with a short explanation.
What gets recorded on the contact
If the visitor proceeds to submit the form, the contact is created as normal plus:
- The company_domain attribute is set to the domain they checked.
- The lead score gets a +5 nudge (we know more about them than we would otherwise).
- The source is appended with
+mail-checkso you can slice analytics by which form variant they came through.
Filtering on it later
In a dynamic audience, you can target by the new attribute:
company_domainexists → "everyone who ran Mail Check".sourcecontains "mail-check" → same intent, different angle.
This is a good high-intent segment for follow-up sequences.