{"uid":"cap_9mtzar47pgdJGjottgqiD","slug":"is-email-hosted-by-startmail-b55b26f8","name":"Is Email Hosted by StartMail","description":"Is the domain's email hosted by startmail? Looks up the MX records (Cloudflare DoH) and matches them against startmail's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliverability, sales and migration work. $0.01 per lookup.","url":"https://email.intel.rallylive.ca/email/hosted-by/startmail?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_3I8XebL7RTARe6yBDTb1A","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":"Checks whether a given domain's email is hosted by StartMail by resolving MX records via Cloudflare DoH and matching against StartMail's mail-exchanger patterns.","exampleAgentPrompt":"Can you check if the email for protonalternative.com is hosted by StartMail? I want to know if their MX records match StartMail's mail-exchanger patterns.","exampleUseCases":[{"title":"Pre-sales email provider research","prompt":"Before I reach out to leads at mycompany.io, can you tell me if their email is hosted by StartMail? I want to tailor my outreach to their privacy-focused email setup."},{"title":"Email migration vendor identification","prompt":"We're planning to migrate away from StartMail and I need to confirm that secureinbox.org is still using StartMail as their email host — can you look up their MX records and check?"},{"title":"Deliverability stack audit","prompt":"I'm auditing email deliverability for a list of domains and need to know if newsletter.privacyco.net is routed through StartMail — can you check the MX records and tell me if they match StartMail's patterns?"}],"resultDescription":"Returns a yes/no answer indicating whether the domain's email is hosted by StartMail, along with the full list of resolved MX hosts and which specific MX records matched StartMail's known mail-exchanger patterns.","failureModes":["Domain does not exist or has no MX records — returns no match or an error","Cloudflare DoH resolution failure — DNS lookup cannot complete","Domain has MX records but none match StartMail patterns — returns 'no'","Invalid or malformed domain input — request fails or returns error","StartMail pattern list may lag behind if StartMail updates their MX infrastructure"],"whenToPreferThis":"Use this endpoint when you need to specifically detect StartMail as the email hosting provider for a domain, particularly for sales intelligence, deliverability research, or migration planning. Prefer this over generic MX lookup tools when you need a definitive yes/no answer keyed to StartMail's specific mail-exchanger signatures. Use sibling endpoints for detecting other email providers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T12:45:06.571Z","isFirstParty":false,"canonicalSlug":"is-email-hosted-by-startmail-b55b26f8"}