SPF, DKIM and DMARC each pass or fail individually, and the useful question — will this domain's mail be accepted — depends on how they combine. A DMARC policy of reject with a misaligned SPF is worse than no DMARC at all, and three separate lookups leave that inference to the caller. One tool, one report, one interpretation is the right shape for this question. Narrow by design: it audits and does not fix, and the recommendation of what to change is still yours to derive from what it reports.
A single-tool email deliverability auditor: it checks a domain's SPF, DKIM and DMARC configuration along with its DNS health and returns the result as one report.
- check_domain_deliverability returns the three authentication records and the DNS health around them, rather than requiring three separate lookups and their interpretation.
APIFY_TOKEN — it runs through Apify, so usage draws on that account.
One command plus a key — npx -y @mambalabsdev/mcp-domain-deliverability-checker, then supply credentials