Email authentication and deliverability checks for up to 10 sending domains in one call, $0.002 a domain, settled as one payment: SPF with lookup count, DKIM keys, DMARC policy, MX, MTA-STS, TLS-RPT and BIMI, every problem named with its fix and an A–F grade per domain. For deliverability audits across a portfolio of domains. All or nothing: if any domain can't be checked, nothing is charged and each failure is named.

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