{"uid":"cap_rvgFcC-gZBQ2pSHD0BxS2","slug":"email-validation-syntax-mx-and-disposable-domain-check-a6ae1997","name":"Email Validation — Syntax, MX, and Disposable Domain Check","description":"Email validation — Syntax check + live MX/deliverability + disposable-domain flag.","url":"https://mcpfax-utility.bowling-anthony.workers.dev/v1/validate-email","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"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/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_qAACcEXP4XwT2_4luB5qz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an email address by checking syntax correctness, live MX record deliverability, and whether the domain is a known disposable/throwaway provider.","exampleAgentPrompt":"Can you check whether 'john.doe@tempmail.com' is a valid, deliverable email address, and tell me if it's from a disposable domain?","exampleUseCases":[{"title":"Filter fake signups at registration","prompt":"Before we store this new user's email 'randomuser@guerrillamail.com', can you validate it — check the syntax, confirm the domain actually receives mail, and flag it if it's a disposable address?"},{"title":"Scrub a lead list before outreach","prompt":"I have a prospect email 'sarah.johnson@bizco.net' — please verify it's syntactically correct, that the domain has working MX records, and that it's not a throwaway address before I add her to our campaign."},{"title":"Catch bad emails in a support form","prompt":"A user just submitted 'support-request@yopmail.com' through our contact form — can you validate whether that email is real and deliverable, and let me know if it's a known disposable domain?"}],"resultDescription":"Returns a structured result indicating whether the email passes syntax validation, whether the domain has live MX records (confirming it can receive mail), and whether the domain is flagged as a disposable/throwaway provider — giving a clear deliverability verdict for each check.","failureModes":["Invalid or malformed email input returns a syntax error immediately without MX lookup","Domain has no MX records — email structurally valid but undeliverable","MX lookup timeout if the domain's DNS is slow or unresponsive","Domain is valid but not in the disposable-domain list, potentially missing newer throwaway services","Network issues on the worker may return 5xx errors"],"whenToPreferThis":"Choose this endpoint when you need a fast, multi-layered email check combining syntax, live DNS/MX deliverability, and disposable-domain detection in a single call — especially for registration flows, lead enrichment, or outreach list hygiene. Prefer it over simple regex-only validators when you need to know if the domain can actually receive mail, or when filtering out throwaway accounts is important.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:33:44.894Z","isFirstParty":false}