toolsko

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Email Setup Checker (MX, SPF, DKIM, DMARC)

Check if a domain is set up to receive email and protect against fake senders.

Tool inputs stay in your browser · optional AI search sends your query

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Good to know: Good SPF, DKIM and DMARC records help your emails land in the inbox, not spam.

How to use it (step by step)

  1. 1Type your email domain (the part after @, like toolsko.com).
  2. 2Optionally type a DKIM selector (your email provider tells you; Google Workspace uses “google”).
  3. 3Press Check and fix anything marked ✗ in your DNS settings.

Words to know

DNS records (A, MX, TXT, CNAME)
Lines in a domain’s DNS. A = website address, MX = where email goes, TXT = notes used for verification and email security, CNAME = a nickname that points to another name.
SPF, DKIM, DMARC
Email security settings in DNS. SPF lists who may send for your domain, DKIM adds a digital stamp, DMARC tells receivers what to do with fakes.

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