{"uid":"cap_x7UR_RKOzlcEstqH4L0dW","slug":"dns-txt-mail-subdomain-344b1ac4","name":"dns-txt-mail-subdomain","description":"TXT record of mail.<domain>: looks up the mail host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like mail without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/mail/txt?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_XwhtMN5lr2_Uddk9Yxn2m","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":"Looks up TXT records for the mail.<domain> subdomain via Cloudflare DNS over HTTPS and reports existence, records, and TTL.","exampleAgentPrompt":"Can you check whether mail.example.com has any TXT records and tell me what they say and their TTL?","exampleUseCases":[{"title":"Verify SPF record on mail subdomain","prompt":"Check if mail.acmecorp.com has any TXT records — I want to see if there's an SPF entry set up there."},{"title":"Email infrastructure audit","prompt":"I'm auditing the DNS setup for clientdomain.com — can you look up the TXT records on its mail subdomain and tell me what you find, including the TTL?"},{"title":"Quick mail host existence check","prompt":"Does mail.startupxyz.io actually exist in DNS? Check for TXT records there so I know if they've configured a mail host."}],"resultDescription":"Returns whether the mail.<domain> subdomain exists in DNS, its TXT record values (e.g. SPF, DKIM, or other text records), and the TTL of those records, as resolved via Cloudflare DNS over HTTPS.","failureModes":["Domain does not exist — returns NXDOMAIN or no records found","mail subdomain has no TXT records — returns empty record set","Invalid or malformed domain input — may return error or empty response","Cloudflare DoH upstream unavailable — service may time out or return error","Rate limiting or payment failure — request not processed"],"whenToPreferThis":"Use this endpoint when you specifically need TXT records for the mail subdomain (mail.<domain>) of a given domain and want a quick existence check without full subdomain enumeration. Prefer it over generic DNS lookup tools when you need a targeted, cost-effective single-host TXT query resolved via Cloudflare DoH.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:55:37.511Z","isFirstParty":false,"canonicalSlug":"dns-txt-mail-subdomain-344b1ac4"}