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Home Free Tools Email Authentication Checker

Email Authentication Checker

Verify your domain's SPF, DKIM, and DMARC records to make sure your emails aren't getting rejected or landing in spam.

Want full site audits and ongoing monitoring?

NitroShock tracks your domain health, rankings, and technical SEO in one dashboard.

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No subscription · Pay per use

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This free tool is one slice of the job. The full kit — rank tracking, audits, competitor gaps, content, and your visibility across ChatGPT and Google’s AI Overviews — runs on credits you only spend when you use them. Sign up and we’ll drop 25 credits in your account to try the paid tools on us.

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