{"uid":"cap_Twjo2MAXnYA-5NkfcBw8F","slug":"mail-security-tools-email-security-score-c8e7d1db","name":"Mail Security Tools - Email Security Score","description":"Free directory of email-security and MSP tools for small businesses. Free-tier notes are dated from each vendor page.","url":"https://api.mailsecuritytools.com/v1/score?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","maxLength":320,"description":"Domain (or an email/URL on it), e.g. example.com"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"grade":"C","score":72,"domain":"example.com","report":"email_security_score","findings":[{"fix":"Move to p=quarantine, then p=reject.","area":"dmarc","title":"DMARC p=none (monitor only)","points":15,"severity":"warn"}],"top_fixes":[]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_G5PRj5oTQL_OKKjhSVqoT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a graded email security score (0-100, A-F) for a domain by live-checking SPF, DMARC, DKIM, and MX DNS records with findings and top 3 remediation suggestions.","exampleAgentPrompt":"Can you check the email security score for acmecorp.com — I want to see the SPF, DMARC, and DKIM grades and find out what the top fixes are?","exampleUseCases":[{"title":"Pre-send domain security audit","prompt":"Before we launch our email campaign, can you run an email security check on ourcompany.com and tell me the overall score and what we need to fix to avoid landing in spam?"},{"title":"Vendor email trust assessment","prompt":"I'm evaluating a new vendor — can you check the email security score for vendordomain.com and let me know if their SPF, DMARC, and DKIM records are properly configured?"},{"title":"Ongoing security posture monitoring","prompt":"Can you check the email security grade for mybusiness.com right now and flag any findings so I know if anything has broken since last week?"}],"resultDescription":"Returns a numeric score from 0-100 and a letter grade (A-F) for the domain's overall email security posture, along with individual sub-scores for SPF (up to 30 points), DMARC (up to 40 points), DKIM (up to 25 points), and MX (up to 5 points), plus a list of specific findings and the top 3 prioritized remediation actions. Returns HTTP 400 for malformed input and 404 for unrecognized domains.","failureModes":["400 Bad Request: domain parameter is malformed, empty, or syntactically invalid","404 Not Found: domain cannot be resolved or has no discoverable DNS records","DNS lookup timeouts may cause delayed or incomplete sub-scores","DKIM scoring may be limited if no selector hints are available","Newly registered domains may lack sufficient DNS propagation"],"whenToPreferThis":"Choose this endpoint when you need a single, all-in-one graded assessment of a domain's email security posture (SPF + DMARC + DKIM + MX) in one call, with actionable fix recommendations — especially when you want a numeric score and letter grade rather than raw DNS record parsing. Prefer it over building your own DNS lookup chain when you need instant, human-readable scoring for audits, vendor evaluations, or pre-deployment checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T00:35:46.462Z","isFirstParty":false,"canonicalSlug":"mail-security-tools-email-security-score-c8e7d1db"}