Datacircle

WhoisXML API, GET /api/v3: email validation API pricing, 22 plans

WhoisXML API's sitellms.txt
50% complete: 3 of the 6 key fieldsSee which
$0.00per 1,000 emails
Plan: Free one of WhoisXML API's 22 plans
Call: GET /api/v3 one of WhoisXML API's 2 calls

About this item

  • Live. The call checks the email when you make it.
  • 3 of the 6 key fields. Address, Its check, Company.
  • Nothing to pay. You get 100 credits once, enough for 100 calls.
  • One call. You send emailAddress to GET /api/v3. Optional: outputFormat, validateDNS, validateSMTP, checkCatchAll, checkFree, checkDisposable. The call returns whether the address takes mail.
  • Who can get it: anyone, for internal business purposes. Keep data: with conditions. Use data: with conditions.

Compare with similar plans

Other providers' plans with the closest prices per 1,000. Like this plan, each is live.

This planWhoisXML API, free, Free, GET /api/v3ZeroBounce, free, Freemium, POST /v2/validatebatchAbstract API, freeAirscale, freeXverify, free
$ per 1,000$0.00$0.00$0.00$0.00$0.00
Completeness50%83%67%50%33%
Billingfreefreefreefreefree
Pay$0$0$0$0$0
Enough for100 calls, once100 results a month100 calls a monthnot published100 calls, once
Freshnesslivelivelivelivelive
Who can get itanyone, for internal business purposesanyone signing up with a business or premium email domain, one free account per person or business, for their internal business purposes onlyanyone 18 or olderanyone 18 or overanyone

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-20.

  1. emailverification.whoisxmlapi.com/api
  2. emailverification.whoisxmlapi.com/api/documentation/limits
  3. emailverification.whoisxmlapi.com/api/documentation/making-requests
  4. emailverification.whoisxmlapi.com/api/documentation/output-format
  5. emailverification.whoisxmlapi.com/api/pricing
  6. main.whoisxmlapi.com/terms-of-service
  7. main.whoisxmlapi.com/wxa-one/pricing

Product details

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

  • Address
  • Its check
  • Confidence, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000$0.00
Billingfree
Aggregators
Aggregatorsnone
Charges
Percall
Also pays forfrom the same budget: Bulk Email Verification API
Not found
$ per 1,000$0.00
In their words
Their pitchOur Email Verification API performs a comprehensive validation of email addresses in real-time and conveniently. Verify the email addresses coming from new user registrations, reduce email bouncing, block spam, and more.
Data
Freshnesslive
Keep datauntil the Agreement ends: on termination, delete the Data and Whois API Properties
Use dataCustomer’s license to use Whois API’s Services, Data, and other properties is limited to internal business purposes only. Accordingly, Customer shall not: Resell, sublicense, or distribute the Data or Services to any third party, Use the Data in any commercial product or service intended for sale, licensing, or public distribution, Modify or create derivative works intended for public release or commercial gain without the express written consent of Whois API. [...] Customer and its affiliates shall not use, or permit any third party to use, the Data or Parsed Data (including derivatives) for the purpose of AI model training, testing, or development without receiving express, written authorization from Whois API.
Plan
Pay$0
You get100 credits
Enough for100 calls, once
Rate limit
Per second30
Batch1
Speed
Answerin the call
The call
You sendemailAddress. Optional: outputFormat, validateDNS, validateSMTP, checkCatchAll, checkFree, checkDisposable
MethodGET
Path/api/v3
About the plan
PlanFree
Who can get itanyone, for internal business purposes
The 12 fields the plan's answer can hold

username, domain, email address, format check, SMTP check, DNS check, free check, disposable check, catch-all check, MX records, audit created date, audit updated date