{"uid":"cap_ulyjY4ocMBxN81VBmWiz3","slug":"agentutility-email-deliverability-checker-7d18a27e","name":"AgentUtility Email Deliverability Checker","description":"Checks email deliverability by validating address format, MX reachability, temp-mail risk, role mailbox risk, and SPF/DMARC/DKIM authentication records without contacting the recipient mailbox. Use it as an email deliverability API, deliverability score, or inbox readiness domain check.","url":"https://x402.agentutility.ai/email-deliverability","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":["email"],"properties":{"email":{"type":"string","description":"Email address to validate and score, e.g. 'buyer@example.com'."},"dkim_selectors":{"type":"array","items":{"type":"string"},"description":"Optional DKIM selectors to check. Defaults to common selectors such as google, selector1, selector2, s1, and s2."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"risk":{"type":"string"},"email":{"type":"string"},"domain":{"type":"string"},"mx_records":{"type":"array","items":{"type":"string"}},"is_disposable":{"type":"boolean"},"is_role_account":{"type":"boolean"},"can_receive_mail":{"type":"boolean"},"verification_level":{"type":"string"},"deliverability_score":{"type":"integer"}}}}}}},"responseSchema":{"type":"json","example":{"risk":"low","email":"support@example.com","domain":"example.com","mx_records":["10 mail.example.com."],"is_disposable":false,"is_role_account":true,"can_receive_mail":true,"verification_level":"domain_dns_no_mailbox_probe","deliverability_score":92}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RTIZfTngkEbUFC0791H3a","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an email address for deliverability by checking format, MX records, temp-mail risk, role mailbox risk, and SPF/DMARC/DKIM authentication records without contacting the recipient mailbox.","exampleAgentPrompt":"Can you check whether john.doe@examplecorp.com is actually deliverable — I want to know if the domain has valid MX records, if it's a temp-mail or role-based address, and whether SPF, DMARC, and DKIM are properly configured?","exampleUseCases":[{"title":"Pre-send list hygiene check","prompt":"Before I send this marketing campaign, check if sarah.johnson@prospectdomain.com is deliverable — I need to know if the MX records are live, if it's a disposable address, and whether the domain has proper email authentication set up."},{"title":"CRM lead qualification","prompt":"I just got a new lead who signed up with the email noreply@bigcorp.com — can you tell me if that's a real deliverable address or a role mailbox I shouldn't bother reaching out to?"},{"title":"Onboarding email validation","prompt":"A user just registered with the email temp123@guerrillamail.com — check if this is a temporary or throwaway email address and whether the domain has proper MX records before I confirm their account."}],"resultDescription":"Returns a structured deliverability assessment including: overall deliverability score, format validity flag, MX record reachability status, temp-mail/disposable address risk flag, role mailbox risk flag (e.g. info@, admin@), and individual SPF, DMARC, and DKIM authentication record statuses — all without contacting or pinging the actual recipient mailbox.","failureModes":["Invalid or malformed email address input returns a format validation error","Domain with no MX records returns unreachable status","DNS lookup timeout may return inconclusive MX or authentication record results","Unknown or private domains may return partial results with limited SPF/DKIM data","Payment failure via x402 protocol results in 402 response and no deliverability data"],"whenToPreferThis":"Choose this endpoint when you need a privacy-safe, non-intrusive deliverability check that does not ping the recipient mailbox — ideal for pre-send list validation, CRM hygiene, onboarding flows, or lead scoring. Prefer this over SMTP-based verification tools when avoiding false positives from catch-all servers matters, or when checking authentication records (SPF/DMARC/DKIM) is part of the requirement. The x402 micropayment model makes it cost-effective for per-address spot checks in agentic workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:00:00.373Z","isFirstParty":false}