{"uid":"cap_tYC9yehVIdcvoJsvf4oC7","slug":"catch-all-hint-61fb943a","name":"catch-all-hint","description":"Catch-all mailbox hint (no SMTP probing): estimates whether a domain accepts mail to any address, from provider defaults (Google Workspace/Microsoft 365 usually reject unknown users; many small hosts and Cloudflare Email Routing accept all), wildcard DNS and MX shape. Helps interpret 'deliverable: likely' results. $0.01 per domain.","url":"https://intel.rallylive.ca/email/catch-all-hint","method":"GET","headers":{},"bodySchema":{"type":"object","$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_k-ARteC6CW229-pG_oBeb","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":"Estimates whether a domain accepts mail to any address (catch-all behavior) using provider heuristics, wildcard DNS, and MX shape — no SMTP probing required.","exampleAgentPrompt":"Can you check whether the domain acme-corp.io is a catch-all mail host — does it accept email sent to any address, or does it reject unknown users?","exampleUseCases":[{"title":"Interpreting ambiguous email verification","prompt":"I just verified a list of email addresses and several came back as 'deliverable: likely' — can you check whether the domains like freshstartco.io and brightsidehealth.com are catch-all so I know if those results are trustworthy?"},{"title":"Email campaign lead qualification","prompt":"Before we send our outreach campaign to leads from smallbiznetwork.org, can you check if that domain is catch-all? I want to know if bounce rates will be reliable or if they accept mail to anything."},{"title":"Detecting Cloudflare Email Routing domains","prompt":"I'm trying to figure out if newsletter@cloudpivot.dev is a real inbox or just a catch-all forwarding setup — can you check if that domain accepts mail to any address?"}],"resultDescription":"Returns a structured estimate of whether the queried domain behaves as a catch-all mail host, based on known provider defaults (e.g. Google Workspace and Microsoft 365 typically reject unknown users; Cloudflare Email Routing and many small hosts accept all), wildcard DNS presence, and MX record shape. Helps contextualize 'deliverable: likely' results from email verification tools without performing live SMTP probing.","failureModes":["Unknown or unresolvable domain may return low-confidence estimate","Domain uses atypical MX configuration not covered by provider heuristics","New or recently migrated domains may have stale DNS that produces incorrect inference","No SMTP probing means the result is an estimate, not a confirmation — false positives possible for unusual hosting setups"],"whenToPreferThis":"Choose this endpoint when you need to assess catch-all status without triggering SMTP probes (which can be rate-limited, flagged, or blocked). It is particularly useful when interpreting results from email verification tools that return 'deliverable: likely' ambiguity, or when you want a fast, low-cost signal about whether a domain uses a major provider (Google Workspace, Microsoft 365) versus a permissive catch-all host (Cloudflare Email Routing, small shared hosts).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:49:24.422Z","isFirstParty":false}