{"uid":"cap_A4VumZgxwvEj7k1dU3zvC","slug":"agent-email-check-batch-email-verification-ecdfc35a","name":"Agent Email Check – Batch Email Verification","description":"Check up to 100 email addresses in one paid call, billed per address.","url":"https://mailcheck.netzhandwerker.de/email/batch","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"emails":{"type":"array","items":{"type":"string"},"maxItems":100,"minItems":1,"description":"Between 1 and 100 addresses. Billed at 0.0006 USDC per address with a 0.001 USDC minimum charge."},"smtp_check":{"type":"boolean","default":false,"description":"Ask for an optional SMTP probe. Off by default, heavily throttled, one attempt per target and never retried. Without it the verdict of a routable address stays \"unknown\"."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_643gPD2d9N0WIaYVu7h38","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates up to 100 email addresses per call using DNS and list-based checks, with optional SMTP probing, billed per address.","exampleAgentPrompt":"Can you verify these 50 email addresses for me and tell me which ones are likely undeliverable? Also run an SMTP check on each one to get a more definitive verdict where possible.","exampleUseCases":[{"title":"Pre-campaign mailing list cleanup","prompt":"I have a list of 80 email addresses from our last event signup form — can you check all of them for deliverability so I can remove the bad ones before we send the newsletter?"},{"title":"Signup form fraud screening","prompt":"We just got 40 new user registrations and I want to make sure the email addresses are real before activating the accounts — can you validate all of them, including an SMTP probe?"},{"title":"CRM data quality audit","prompt":"I exported 95 contacts from our CRM and I suspect a lot of the email addresses are stale or fake — can you run a batch verification on all of them and flag which ones are unroutable?"}],"resultDescription":"Returns a verification verdict for each submitted email address, indicating whether it is valid, invalid, or unknown (the last occurring when no SMTP check is performed on a routable address). Results reflect DNS-based and blocklist checks; when smtp_check is enabled, an additional live SMTP probe is attempted once per address to confirm mailbox existence.","failureModes":["Submitting an empty array or more than 100 addresses will be rejected by the schema","SMTP checks are heavily throttled and only attempted once — a failed probe may leave verdict as unknown rather than confirmed","DNS-only checks cannot confirm mailbox existence, leaving routable addresses with an 'unknown' verdict if smtp_check is false","Payment failure or insufficient USDC balance will block the request","Temporary DNS failures may cause valid addresses to appear unresolvable"],"whenToPreferThis":"Choose this endpoint when you need to verify multiple email addresses in a single API call and want cost-efficient per-address billing (0.0006 USDC each, $0.001 minimum). It is especially useful for list hygiene before email campaigns, fraud screening at signup, or CRM data audits. Prefer it over single-address checkers when processing batches of 2–100 emails to minimize round-trips. If you need confirmed mailbox existence rather than just DNS validity, enable smtp_check, but be aware that SMTP probes are throttled and never retried.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:54:14.209Z","isFirstParty":false}