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Playground demo key · api.reefapi.com

post/email-health/v1/mx1 credit

MX records (sorted by preference) + a mail-provider guess from the exchange hostnames.

Working example

Parameters

domainrequired

The domain to inspect (a bare host like github.com; a full URL, a leading www., or a full email address are accepted and normalized to the registrable domain).

request preview

curl -X POST https://api.reefapi.com/email-health/v1/mx \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"domain":"github.com"}'

Hit Send to run this endpoint live.