Datacircle

Blackwood State pricing: email verification API, POST /v1/email-batch

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50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$1.00per 1,000 emailsWe haven't run Blackwood State through our email verification API benchmark yet.We rank 4,337 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. This plan costs less per 1,000 emails than 67% of the 4,337 plans.treg's top-up from $10 is the cheapest paid plan per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $68.365 per 1,000 emails when no provider answers. StableEnrich's pay-as-you-go plan costs the least for 10,000 emails a month: $0.05.Disify's $9 monthly plan (/email) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.pingutil, Validemail.co and looot are the best email verification API providers in the Datacircle benchmark.
Type a number to see the cheapest Blackwood State plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: x402 pay per call one of Blackwood State's 4 plans
Call: POST /v1/email-batch one of Blackwood State's 2 calls for this API
API: Email verification API one of Blackwood State's 4 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 6 fields on our checklist. Address, Deliverability, Company.
  • Nothing to buy first. You pay per call.
  • One call. You send emails to POST /v1/email-batch. The call returns whether each address you send takes mail.
  • Who can get it: with conditions. Keep data: no API terms. Use data: no API terms.

Blackwood State: email verification API alternatives

Blackwood State alternatives: other email verification API providers by price

We list other providers' plans closest to this plan in price per 1,000 emails.

This planBlackwood State, pay as you go, x402 pay per call, POST /v1/email-batchPrime Verifier, $200 pack, Pay-As-You-Go 200,000 credits, POST /v1/verify/singleBillionVerify, $20 pack, Starter, POST /verify/bulkMillionPhones, $100 monthlyDeBounce, top-up from $200, 200K credits, GET /v1/, Single email validation
$ per 1,000 emails$1.00$1.00$1.00$1.00$1.00
Completeness50%50%67%33%50%
Billingpay as you gopay firstpay firstmonthlypay first
Payper call$200$20$100$200
Enough foras many as you pay for200,000 calls20,000 results100,000 calls a month200,000 calls
Freshnessunknownunknownlivelivelive
Who can get itanyone with a wallet paying each call in USDC on Base (x402), with no account or API keyanyone 18 or older able to form a binding contractanyone at least 18 years old and legally able to enter into a contract, for their internal business purposes onlyanyone with a work emailanyone over 18

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-09.

  1. api.cdp.coinbase.com/platform/v2/x402/discovery/resources
  2. x402-gateway.blackwoodstate8.workers.dev
  3. x402-gateway.blackwoodstate8.workers.dev/llms.txt
  4. x402-gateway.blackwoodstate8.workers.dev/openapi.json
  5. x402-gateway.blackwoodstate8.workers.dev/services/email-batch

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Address
  • Deliverability
  • Confidence, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000 emails$1.00
Perresult
Billingpay as you go
Aggregators
Aggregatorsnone
Charges
Also pays fornothing else
In their words
Their pitchReturns JSON checking up to 20 email addresses in one call: syntax, MX records, disposable, free and role flags, SPF, DMARC and a verdict each, plus counts by verdict.
Data
What it checksformat, mail servers, disposable domains, role addresses
Keep datano API terms
Use datano API terms
Plan
Payper call
Rate limit
Batch20
Speed
Answerin the call
The call
You sendemails
MethodPOST
Path/v1/email-batch
About the plan
Planx402 pay per call
Who can get itanyone with a wallet paying each call in USDC on Base (x402), with no account or API key
The 19 fields the plan's answer can hold

email count, domain count, verdict counts, email, normalized email, syntax valid, domain, disposable, free provider, role account, domain exists, MX records, accepts mail, SPF record, DMARC record, DMARC policy, verdict, reasons, SMTP checked

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