Datacircle

OnchainCheck pricing: email verification API

OnchainCheck's siteThis page as plain textEmail validation API: best verification providers comparedOnchainCheck: email verification API alternatives

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67% complete: 4 of the 6 fields on our checklistSee the 6 fields
$2.00per 1,000 emailsWe haven't run OnchainCheck 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 48% 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 OnchainCheck plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: x402 pay per call OnchainCheck's only plan
Call: GET /email/validate OnchainCheck's only call for this API
API: Email verification API one of OnchainCheck's 8 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 4 of the 6 fields on our checklist. Address, Deliverability, Confidence, Company.
  • Nothing to buy first. You pay per call.
  • One call. You send email to GET /email/validate. The call returns whether the address takes mail.
  • Who can get it: anyone with a wallet paying USDC on Base (x402), no account or API key. Keep data: no API terms. Use data: no API terms.

OnchainCheck: email verification API alternatives

OnchainCheck alternatives: other email verification API providers by price

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

This planOnchainCheck, pay as you goMillionPhones, $60 monthlyVerifly, $10 pack, Starter, POST /verify/bulkVerimail, $20 packNullBounce, $10 packGlianaAI, pay as you go
$ per 1,000 emails$2.00$2.00$2.00$2.00$2.00$2.00
Completeness67%33%33%50%33%17%
Billingpay as you gomonthlypay firstpay firstpay firstpay as you go
Payper call$60$10$20$10per call
Enough foras many as you pay for30,000 calls a month5,000 results10,000 calls5,000 callsas many as you pay for
Freshnessunknownliveliveliveliveunknown
Who can get itanyone with a wallet paying USDC on Base (x402), no account or API keyanyone with a work emailanyonebusinesses and professionals, not directed at anyone under 18anyoneanyone with a wallet paying USDC on Base or Solana (x402), Algorand or BNB Smart Chain, with no account or API key

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. onchaincheck.dev
  3. onchaincheck.dev/openapi.json

Product details

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

  • Address
  • Deliverability
  • Confidence
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000 emails$2.00
Percall
Billingpay as you go
Aggregators
Aggregatorsnone
Charges
Also pays fornothing else
Not found
$ per 1,000$0.00
In their words
Their pitchIs this email address worth sending to? Checks syntax, the domain's mail servers (MX, implicit MX, null MX) and mail provider, disposable domains (10,000+ known), role accounts (info@, sales@), free providers, and misspelled domains (gmial.com suggests gmail.com). Returns valid, risky or invalid with a 0-100 score and reasons. No SMTP probe.
Data
What it checksformat, mail servers, disposable domains, role addresses
Keep datano API terms
Use datano API terms
Plan
Payper call
Rate limit
Batch1
Speed
Answerin the call
The call
You sendemail
MethodGET
Path/email/validate
About the plan
Planx402 pay per call
Who can get itanyone with a wallet paying USDC on Base (x402), no account or API key
The 19 fields the plan's answer can hold

email, normalized email, domain, verdict, score, reasons, syntax valid, MX host, MX priority, implicit MX, null MX, accepts mail, mail provider, disposable, role, free, suggestion, checked at, note

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