Datacircle

Kaidn Email verification API pricing

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33% complete: 2 of the 6 fields on our checklistSee the 6 fields
$0.00per 1,000 emailsWe ran Kaidn in our email verification API benchmark. We didn't score any Kaidn plan.This plan is free. We rank 4,767 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. 728 email verification API plans on our price sheet are free. pingutil's free plan scores highest of the free plans in our benchmark, at 82.3 out of 100.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, and costs less up front than treg's top-up from $10.Validemail.co, pingutil and looot are the best email verification API providers in the Datacircle benchmark.
Type a number to see the cheapest Kaidn plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: Free one of Kaidn's 5 plans
Call: POST /v1/check/email Kaidn's only call for this API
API: Email verification API one of Kaidn's 2 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 2 of the 6 fields on our checklist. Address, Deliverability.
  • Nothing to pay. You get 10,000 requests a month.
  • One call. You send email to POST /v1/check/email. The call returns whether the address takes mail.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

Kaidn: email verification API alternatives

Kaidn alternatives: other email verification API providers by price

The table starts with Kaidn's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to Kaidn's.

Kaidn, $299 monthlyVerimail, $299 monthlyMailVeri, $299 pack, 1,000,000 credits, POST /verify-mail/SendBridge, $299 packConsulti.ai, $299 pack
$ per 1,000 emails$0.299$0.299$0.299$0.299$0.299
Completeness33%50%50%50%33%
Billingmonthlymonthlypay firstpay firstpay first
Pay$299$299$299$299$299
Enough for1,000,000 calls a month1,000,000 calls a month1,000,000 calls1,000,000 calls1,000,000 calls
Freshnessunknownliveliveunknownunknown
Who can get itanyonebusinesses and professionals, not directed at anyone under 18anyoneanyone at least 18 years old and able to enter into contractsanyone at least 18 years old and capable of forming a binding contract

Sources

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

  1. api.kaidn.io/v1/openapi.json
  2. kaidn.io
  3. kaidn.io/docs/api
  4. kaidn.io/pricing
  5. kaidn.io/terms
  6. kaidn.io/tools/email-lookup

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, not in the answer
Price
$ per 1,000 emails$0.00
Percall
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays forfrom the same budget: Check an IP address · Check a phone number · Score an event · Score many events at once
Not found
$ per 1,000 calls that find nothing$0.00
In their words
Their pitchDisposable-domain, MX and address-integrity checks for one address.
Data
What it checksformat, mail servers, disposable domains
Keep datano limit
Use dataYou agree not to, and not to permit any third party to: use the Service unlawfully, or in violation of any applicable law, regulation, sanctions regime or third-party right, submit data you do not have a lawful basis and the necessary rights, consents or notices to submit and have processed (see section 7), use the Service as the sole or automated basis for a decision that produces legal or similarly significant effects on an individual, or to unlawfully discriminate against any person or group, including on the basis of a protected characteristic, use the Service for credit scoring, employment, insurance, housing, or any use regulated as a consumer report or background-screening service, unless you have separately arranged this with us in writing, attempt to reverse engineer, resell, sublicense, or build a competing risk-scoring product from the Service or its outputs, probe, scan, overload, circumvent rate limits, or interfere with the integrity or performance of the Service, upload malware, or use the Service to harass, defame, or harm others.
Plan
Pay$0
You get10,000 requests a month
Enough for10,000 calls a month
Rate limit
Per second4
Batch1
Speed
Answerin the call
The call
You sendemail
MethodPOST
Path/v1/check/email
About the plan
PlanFree
Who can get itanyone
The 16 fields the plan's answer can hold

fraud score, disposable, MX record, catch-all, gibberish, plus tag, canonical address, aliased, alias tricks, malformed, reject reason, recent abuse, network risk, network operators, honeypot hits, summary

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