{"uid":"cap_-G-5uqy5k3osyP-31vruo","slug":"lookproof-bulk-mail-configuration-checker-07efc2ff","name":"Lookproof Bulk Mail Configuration Checker","description":"Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.","url":"https://api.lookproof.dev/v1/mail/check/bulk?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domains":{"type":"array","items":{"type":"string","examples":["example.com"],"maxLength":1024,"minLength":1},"title":"Domains","maxItems":20,"minItems":1}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_iQ78npwJONS8fXXz8o0qJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks MX, SPF, and DMARC configuration for up to 20 domains in a single request, returning ordered results with retry tokens for failed checks.","exampleAgentPrompt":"Can you run a bulk mail configuration audit on these 15 client domains — checking their MX, SPF, and DMARC records all at once: acme.com, globex.com, initech.com, umbrella.com, cyberdyne.com, soylent.com, oscorp.com, weyland.com, tyrell.com, nakatomi.com, virtucon.com, dharma.com, gringotts.com, bluth.com, and sterling.com?","exampleUseCases":[{"title":"Customer domain portfolio email audit","prompt":"I have a list of 12 customer domains I need to audit for email configuration issues — can you check MX, SPF, and DMARC for all of them at once: client1.com, client2.com, client3.com, client4.com, client5.com, client6.com, client7.com, client8.com, client9.com, client10.com, client11.com, and client12.com?"},{"title":"Brand portfolio deliverability check","prompt":"We manage email for 8 brand domains across our holding company — can you run a bulk mail check on all of them to see which ones are missing DMARC or have SPF problems: brandone.com, brandtwo.com, brandthree.com, brandfour.com, brandfive.com, brandsix.com, brandseven.com, and brandeight.com?"},{"title":"Onboarding validation for new SaaS customers","prompt":"Before we onboard these 5 new customers into our email platform, check whether their domains have proper MX, SPF, and DMARC records set up: newcustomerA.com, newcustomerB.com, newcustomerC.com, newcustomerD.com, and newcustomerE.com."}],"resultDescription":"An ordered array of results (matching the order of the input domain list) where each item contains the MX, SPF, and DMARC check outcomes for that domain. Items that failed due to a technical error include a retry token that can be used for a free re-check of that specific domain.","failureModes":["Domain unreachable or non-existent returns an error result with a retry token","More than 20 domains submitted causes a validation error","Invalid domain string format causes rejection of that item","Temporary DNS resolver failures produce technical error results with retry tokens","Network timeout on bulk requests may result in partial results with retry tokens for failed items"],"whenToPreferThis":"Use this endpoint when you need to audit email configuration (MX, SPF, DMARC) for multiple domains simultaneously — especially for customer lists, brand portfolios, or onboarding pipelines. It is far more efficient than calling a single-domain check 20 times, and the built-in retry token mechanism handles transient DNS failures gracefully. Prefer this over single-domain checks whenever you have 2 or more domains to audit in the same workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:47.111Z","isFirstParty":false,"canonicalSlug":"lookproof-bulk-mail-configuration-checker-07efc2ff"}