{"uid":"cap_JD73TuxTJkBcCtpnw7YFS","slug":"mail-security-tools-bulk-domain-email-security-scorer-d459dfca","name":"Mail Security Tools Bulk Domain Email Security Scorer","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/bulk-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":["domains"],"properties":{"domains":{"type":"string","maxLength":12000,"description":"Comma-separated domains, max 100"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"report":"bulk_email_security_score","results":[{"grade":"B","score":80,"domain":"example.com","issues":[],"status":"ok"}],"summary":{"grades":{"A":0,"B":1,"C":0,"D":0,"F":1},"scored":2,"average_score":61},"domain_count":2}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MytjvSN533ypiYxwUGBvc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scores up to 100 domains at once for email security posture, returning a letter grade, numeric score, and issue list for each domain.","exampleAgentPrompt":"Can you run a bulk email security score on these domains: example.com, acme.org, testco.net — I want to see the grade and any issues for each one?","exampleUseCases":[{"title":"MSP client portfolio audit","prompt":"I manage email security for about 50 small business clients — can you score all their domains at once and tell me which ones are getting a C or below so I know where to focus first?"},{"title":"Pre-send domain health check","prompt":"Before we launch this email campaign, can you bulk-check the email security grades for all the domains on our sender list and flag any that have issues?"},{"title":"Competitor domain security benchmarking","prompt":"Can you score these 10 competitor domains for email security and give me a summary of their average grade and how many are failing?"}],"resultDescription":"Returns a JSON object with a 'results' array where each entry contains the domain name, a letter grade (A–F), a numeric score (0–100), a list of specific issues found, and a status field. A 'summary' object provides grade distribution counts, total domains scored, and the average score across all domains.","failureModes":["Domains list exceeds 100 entries — API may reject or truncate the request","Malformed domain strings in the comma-separated list — individual domain entries may return an error status","Network timeout for very large batches close to the 100-domain limit","Invalid query parameter format — missing or empty 'domains' param returns an error","DNS lookup failures for non-existent domains may return a failed status per domain"],"whenToPreferThis":"Choose this endpoint when you need to assess email security posture (SPF, DKIM, DMARC, etc.) for multiple domains in a single call rather than one at a time. It is ideal for MSPs auditing client portfolios, security teams doing periodic sweeps, or marketers validating sender domains before campaigns. Prefer it over single-domain checkers when you have 2–100 domains to evaluate and want a consolidated grade summary.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T20:33:18.092Z","isFirstParty":false,"canonicalSlug":"mail-security-tools-bulk-domain-email-security-scorer-d459dfca"}