Put our free checker on your website

Any agency, blog or community can add our free SPF, DKIM and DMARC checker to their own site. It is free, we host and maintain it, and the only condition is that the small Powered by Cold Mail Kit credit stays under the tool.

Embed code

Copy this snippet and paste it into your page where you want the checker to appear:

<iframe src="https://coldmailkit.com/embed/auth-checker" width="100%" height="680" style="border:1px solid #e5e5e5;border-radius:12px;" loading="lazy" title="Free SPF DKIM DMARC Checker by Cold Mail Kit"></iframe>

Questions, use the Start a build page.

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