Free tools · Deliverability

Email Domain Health Checker

Check SPF, DKIM, DMARC and MX in one go, with a grade and plain-English fixes.

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Want this done for every email, automatically?

Zevmio warms up your inboxes, verifies your leads and sends personalized cold email that lands in the inbox.

Look up a domain’s SPF record and find duplicates, “+all” and too many lookups.

Find a domain’s DKIM key under common selectors, or check your own selector.

See a domain’s DMARC policy and whether spoofed email is blocked.