Datacircle

Kadec0 pricing: email verification API

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50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$1.20per 1,000 emailsWe haven't run Kadec0 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 64% 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 Kadec0 plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: x402 pay per call Kadec0's only plan
Call: GET /v1/email-validate Kadec0's only call for this API
API: Email verification API one of Kadec0's 9 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 or email to GET /v1/email-validate. 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.

Kadec0: email verification API alternatives

Kadec0 alternatives: other email verification API providers by price

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

This planKadec0, pay as you goPrime Verifier, $120 pack, Pay-As-You-Go 100,000 credits, POST /v1/verify/singleverifications.email, $12 pack, 10,000 credits, POST /api/v1/verify/batchNullBounce, $30 packUnspam, $258.40 monthly, Custom plan, over 100,000 verifications a month, POST /email-verification/instant-checks
$ per 1,000 emails$1.20$1.20$1.20$1.20$1.20
Completeness50%50%67%33%50%
Billingpay as you gopay firstpay firstpay firstmonthly
Payper call$120$12$30$258.40
Enough foras many as you pay for100,000 calls10,000 results25,000 callsas many as you pay for
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 contractanyoneanyoneanyone above the age of 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. api.kadec0.xyz/
  3. api.kadec0.xyz/.well-known/x402
  4. api.kadec0.xyz/docs
  5. api.kadec0.xyz/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, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000 emails$1.20
Perresult
Billingpay as you go
Aggregators
Aggregatorsnone
Charges
Also pays fornothing else
In their words
Their pitchEmail validation and email list cleaning. Checks each email address for RFC syntax, a live MX record lookup returning the real mail hosts, disposable-domain detection, role-account flags (info@, sales@, noreply@), and a free-provider flag, rolled into a per-address ok/risky/invalid verdict with reasons. Batch up to 25 email addresses per call. Domain-level DNS only, no SMTP mailbox probe.
Data
What it checksformat, mail servers, disposable domains, role addresses
Keep datano API terms
Use datano API terms
Plan
Payper call
Rate limit
Batch25
Speed
Answerin the call
The call
You sendone of emails or email
MethodGET
Path/v1/email-validate
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 12 fields the plan's answer can hold

email, normalized email, local part, domain, syntax valid, MX found, MX records, disposable domain, role account, free provider, reasons, verdict

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