{"uid":"cap_cTdU2wEkOIJz2EbfsnJ5m","slug":"is-email-hosted-by-proton-mail-change-watch-67151756","name":"Is Email Hosted by Proton Mail – Change Watch","description":"Change watch for is email hosted by proton mail: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.","url":"https://email.intel.rallylive.ca/watch/email/hosted-by/proton-mail?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_e8IEkL25akw9V3h8Vl2Y9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a domain's email is hosted by Proton Mail and returns a change-detected comparison against the previous check result, including which fields changed and before/after values.","exampleAgentPrompt":"Keep an eye on whether acme.com's email is hosted by Proton Mail — let me know if that ever changes from what it was last time you checked.","exampleUseCases":[{"title":"Competitor email migration alert","prompt":"Watch protonmail.com's own domain for any change in whether it's still hosted by Proton Mail and alert me if anything shifts."},{"title":"Privacy-conscious vendor vetting","prompt":"I want to know if whistleblower.org moves to or away from Proton Mail for their email — can you set up a watch so I get notified when it changes?"},{"title":"Sales intelligence trigger","prompt":"Monitor signal.org to see if they switch their email hosting to Proton Mail — I want to know the moment that changes so I can reach out."}],"resultDescription":"Returns whether the domain's email is currently hosted by Proton Mail (boolean), a 'changed' flag indicating whether the result differs from the previous check (kept for 90 days), a list of fields that changed with their before and after values, and the timestamp of when the state was last observed.","failureModes":["Domain not supplied — returns error indicating missing required query parameter","DNS lookup failure via Cloudflare DoH — may return indeterminate result","No previous check on record (first call) — 'changed' field will be false or null with no before/after values","Domain has no MX records — result will be false with no Proton Mail match","Payment not completed (x402) — request blocked before check runs"],"whenToPreferThis":"Use this endpoint when you need to be alerted to changes in whether a domain uses Proton Mail specifically — not just a point-in-time lookup. It is ideal for scheduled monitoring workflows where you want a diff between the current and previous state rather than just the current value. Prefer the non-watch sibling endpoint for one-off checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T00:50:09.856Z","isFirstParty":false,"canonicalSlug":"is-email-hosted-by-proton-mail-change-watch-67151756"}