{"uid":"cap_2dQDovTLGrfp13lGI5Gwd","slug":"old-colony-web-email-batch-preflight-11-50-addresses-1145abd8","name":"Old Colony Web Email Batch Preflight (11–50 Addresses)","description":"Email preflight 11–50 addresses for $0.005 per batch. Ordered syntax/DNS/MX/disposable evidence and explicit unknowns. Addresses processed, not intentionally logged in routine telemetry. No mailbox, deliverability or consent guarantee. Bazaar response example shows the first result only; actual response includes all items.","url":"https://api.oldcolonyweb.com/v1/email/batch/50?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"emails":{"type":"array","items":{"type":"string","maxLength":320,"minLength":1},"maxItems":50,"minItems":11}}},"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_8nwsvnf1eMDaw_8omK8Oq","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 a batch of 11–50 email addresses for syntax correctness, DNS resolution, MX record presence, and disposable-domain detection for $0.005 per batch.","exampleAgentPrompt":"Can you preflight these 25 email addresses and tell me which ones have syntax errors, missing MX records, or are from disposable email providers before I add them to our mailing list?","exampleUseCases":[{"title":"Pre-import CRM email hygiene","prompt":"I have a list of 30 new leads to import into our CRM — can you run them through email preflight and flag any that have bad syntax, no MX records, or are from throwaway email services?"},{"title":"Newsletter signup disposable filter","prompt":"We got 40 new newsletter signups overnight. Can you check all of them for disposable email addresses and DNS issues so I can remove the junk before sending the welcome email?"},{"title":"Sales outreach list validation","prompt":"Before we kick off the cold outreach campaign, can you validate these 18 prospect email addresses — syntax, DNS, MX records, and disposable domain checks — so we're not wasting sends on bad contacts?"}],"resultDescription":"An ordered array of preflight results for each submitted email address, including syntax validity, DNS resolution status, MX record presence, disposable-domain classification, and any explicit unknown indicators. Results appear in the same order as the input list. No mailbox-level ping or deliverability guarantee is provided.","failureModes":["Fewer than 11 or more than 50 emails submitted — request rejected with validation error","Malformed email strings exceeding 320 characters — item flagged or batch rejected","DNS lookup timeouts causing unknown status for some addresses","Disposable-domain list may not cover all providers, leading to false negatives","Network or service errors returning non-200 responses","Payment failure via x402 protocol preventing request from being processed"],"whenToPreferThis":"Choose this endpoint when you need to validate a mid-size batch of 11–50 email addresses in a single call at low cost ($0.005). It is more efficient than the 2–10 address tier for medium lists and covers syntax, DNS, MX, and disposable-domain checks in one pass. Prefer this over single-address validation when processing form signups, CRM imports, or outreach lists in the 11–50 range. Not suitable for mailbox-level ping verification or consent checking.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T00:31:16.400Z","isFirstParty":false,"canonicalSlug":"old-colony-web-email-batch-preflight-11-50-addresses-1145abd8"}