Datacircle

OnchainCheck pricing: email finder API

OnchainCheck's siteThis page as plain textEmail finder API: the best of 100+ providers comparedOnchainCheck: email finder API alternatives

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30% complete: 3 of the 10 fields on our checklistSee the 10 fields
under $10 per 1,000found livenothing charged when not found
$5.00per 1,000 emailsWe haven't run OnchainCheck through our email finder API benchmark yet.We rank 1,748 plans for email finder APIs by price. Half the plans cost $20.00 or less per 1,000 emails. This plan costs less per 1,000 emails than 85% of the 1,748 plans.Lakewave's $19 monthly plan costs the least per 1,000 emails. Lakewave's email finder API costs nothing beyond the plan price. StableEnrich's pay-as-you-go plan costs the least for 10,000 emails a month: $1.00.ClearBounce's $4 pack covers any number of emails. ClearBounce's $4 pack costs less up front than Lakewave's $19 monthly plan.GetProspect, DiscoLike and Icypeas are the best email finder 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/find OnchainCheck's only call for this API
API: Email finder API one of OnchainCheck's 8 APIs

About this item

  • Live. OnchainCheck finds the email when you call the API.
  • 3 of the 10 fields on our checklist. Confidence, Name, Company.
  • Nothing to buy first. You pay per call.
  • One call. You send name and domain to GET /email/find. The call returns the email.
  • 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 finder API alternatives

OnchainCheck alternatives: other email finder API providers by price

We list other providers' plans closest to this plan in price per 1,000 emails. Each plan in the table gives live data.

This planOnchainCheck, pay as you goSealch, $25 monthlyVeriMails, $1,500 yearly, Scale, POST /api/find-email/csvRafal Sav on Apify, $19 monthlyKitt AI, top-up, Pay As You Go, first 1M found emails a month
$ per 1,000 emails$5.00$5.00$5.00$5.00$5.00
Completeness30%20%10%40%0%
Billingpay as you gomonthlyyearlymonthlypay first
Payper call$25$1,500$19any amount
Enough foras many as you pay for5,000 calls a month25,000 results a month3,800 results a monthas many as you pay for
Freshnesslivelivelivelivelive
Who can get itanyone with a wallet paying USDC on Base (x402), no account or API keyanyoneanyoneanyoneanyone 18 or over

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.

  • Verification, not in the answer
  • Confidence
  • Catch-all domain, not in the answer
  • Where found, not in the answer
  • Personal email, not in the answer
  • Name
  • Job title, not in the answer
  • Company
  • LinkedIn URL, not in the answer
  • Location, not in the answer
Price
$ per 1,000 emails$5.00
Percall
Billingpay as you go
Strengths
Strengthsunder $10 per 1,000, found live, nothing charged when not found
Aggregators
Aggregatorsnone
Not found
$ per 1,000$0.00
In their words
Their pitchFinds a person's likely work email from their name and company domain. Checks the domain's mail servers, reads the company's homepage and contact pages for addresses it publishes to learn its pattern (jane.doe, jdoe, jane), and ranks candidates with a confidence each. An exact address found on the site comes first. No SMTP probe.
Data
Freshnesslive
What it checksmail servers
Keep datano API terms
Use datano API terms
Plan
Payper call
Rate limit
Batch1
Speed
Answerin the call
The call
You sendname, domain
MethodGET
Path/email/find
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 16 fields the plan's answer can hold

name, domain, first name, last name, best guess, confidence, candidate email, candidate pattern, candidate confidence, published on site, published emails, personal addresses seen, pages read, mail provider, checked at, note

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