Authentication
Check and explain SPF, DKIM, DMARC and BIMI records.
SPF checkerFetch a domain's SPF record, expand every include and count DNS lookups.SPF minimizerFlatten and optimize an SPF record that is over the 10-lookup limit.DKIM checkerFetch a published DKIM key by selector and validate it.DKIM validatorPaste a DKIM record and get every tag explained.DMARC checkerFetch a domain's DMARC policy and verify report destinations.DMARC validatorPaste a DMARC record and get every tag explained.BIMI checkerFetch a BIMI record and check its logo and certificate URLs.