# EmailListChecker, free, POST /api/v1/verify/batch: Email verification API

> One POST sits inline in your signup flow and turns away fakes, typos and disposables before they ever touch your database. Not a green light — an answer, with a confidence score you can branch on.

EmailListChecker's Free plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields: Address, Deliverability, Confidence, Name and 2 more. EmailListChecker's docs list none of the 6.
We haven't run EmailListChecker through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 4,207 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. [See the best free email verification API plan.](https://datacircle.dev/best-email-verification-api.txt)
[treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) 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](https://datacircle.dev/validate-email-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-validate-emails/llms.txt) costs the least for 10,000 emails a month: $0.05.
[Disify's $9 monthly plan (/email)](https://datacircle.dev/validate-email-apis/disify/9-monthly-starter-post-email/llms.txt) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.
[pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt), [looot](https://datacircle.dev/validate-email-apis/looot/top-up/llms.txt) and [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/emaillistchecker/free-post-api-v1-verify-batch
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://www.emaillistchecker.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://platform.emaillistchecker.io/api/v1/verify/batch`
- API key: with the plan, on https://www.emaillistchecker.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://platform.emaillistchecker.io/agent-gateway/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: EmailListChecker (https://www.emaillistchecker.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 emails: $0.00
- Per: result
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Verify one email address

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## Bounce

- Bounce refund: credits refunded if a list marked deliverable doesn't reduce your bounce rate, asked within 30 days

## In their words

- Their pitch: One POST sits inline in your signup flow and turns away fakes, typos and disposables before they ever touch your database. Not a green light — an answer, with a confidence score you can branch on.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: You agree not to: Upload lists you don't have a lawful basis to process, or verify addresses to facilitate spam, phishing, or harassment. Use verification results to target addresses in violation of CAN-SPAM, GDPR, CASL, or other applicable marketing laws. Resell, sublicense, or white-label raw verification capacity without a written reseller agreement. Probe, scrape, overload, or reverse-engineer the Service, or circumvent rate limits, credit metering, or security controls. Acceptable Use Policy, you must not use the Service to: Harvest or scrape email addresses you have no right to contact, or process lists bought from data brokers known to be non-consensual. Send spam — unsolicited bulk email, or any message that violates CAN-SPAM, GDPR/ePrivacy, CASL, or similar laws. Enable harassment, fraud, or phishing, or build lists targeting individuals to threaten, dox, or deceive them. Verify lists for malware, scams, or illegal goods distribution. Abuse the infrastructure — circumvent rate limits, probe for vulnerabilities, share credentials, or resell raw access without a reseller agreement. Process special-category data as the primary payload (e.g. lists defined by health, religion, or political affiliation) without a clear lawful basis.

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 results, once
- Expires: never

## Rate limit

- Per second: 10
- Batch: 25

## Speed

- Answer: by polling

## The call

- You send: emails
- Method: POST
- Path: /api/v1/verify/batch

## About the plan

- Plan: Free
- Who can get it: anyone

## The 4 fields the plan's answer can hold

success, batch ID, batch status, total emails

## EmailListChecker's plans (25)

- [EmailListChecker, free, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/free-post-api-v1-verify-batch/llms.txt): $0.00 per 1,000, 0% complete, live
- [EmailListChecker, $20 pack, Pay as you go 5,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/20-pack-pay-as-you-go-5000-credits-post-api-v1-verify-batch/llms.txt): $4.00 per 1,000, 0% complete, live
- [EmailListChecker, $34 pack, Pay as you go 10,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/34-pack-pay-as-you-go-10000-credits-post-api-v1-verify-batch/llms.txt): $3.40 per 1,000, 0% complete, live
- [EmailListChecker, $69 pack, Pay as you go 25,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/69-pack-pay-as-you-go-25000-credits-post-api-v1-verify-batch/llms.txt): $2.76 per 1,000, 0% complete, live
- [EmailListChecker, $125 pack, Pay as you go 50,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/125-pack-pay-as-you-go-50000-credits-post-api-v1-verify-batch/llms.txt): $2.50 per 1,000, 0% complete, live
- [EmailListChecker, $209 pack, Pay as you go 100,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/209-pack-pay-as-you-go-100000-credits-post-api-v1-verify-batch/llms.txt): $2.09 per 1,000, 0% complete, live
- [EmailListChecker, $454 pack, Pay as you go 250,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/454-pack-pay-as-you-go-250000-credits-post-api-v1-verify-batch/llms.txt): $1.816 per 1,000, 0% complete, live
- [EmailListChecker, $839 pack, Pay as you go 500,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/839-pack-pay-as-you-go-500000-credits-post-api-v1-verify-batch/llms.txt): $1.678 per 1,000, 0% complete, live
- [EmailListChecker, $1,399 pack, Pay as you go 1,000,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/1399-pack-pay-as-you-go-1000000-credits-post-api-v1-verify-batch/llms.txt): $1.399 per 1,000, 0% complete, live
- [EmailListChecker, $18 monthly, Monthly 5,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/18-monthly-monthly-5000-credits-post-api-v1-verify-batch/llms.txt): $3.60 per 1,000, 0% complete, live
- [EmailListChecker, $30.60 monthly, Monthly 10,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/30-60-monthly-monthly-10000-credits-post-api-v1-verify-batch/llms.txt): $3.06 per 1,000, 0% complete, live
- [EmailListChecker, $62.10 monthly, Monthly 25,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/62-10-monthly-monthly-25000-credits-post-api-v1-verify-batch/llms.txt): $2.484 per 1,000, 0% complete, live
- [EmailListChecker, $113 monthly, Monthly 50,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/113-monthly-monthly-50000-credits-post-api-v1-verify-batch/llms.txt): $2.26 per 1,000, 0% complete, live
- [EmailListChecker, $188 monthly, Monthly 100,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/188-monthly-monthly-100000-credits-post-api-v1-verify-batch/llms.txt): $1.88 per 1,000, 0% complete, live
- [EmailListChecker, $409 monthly, Monthly 250,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/409-monthly-monthly-250000-credits-post-api-v1-verify-batch/llms.txt): $1.636 per 1,000, 0% complete, live
- [EmailListChecker, $755 monthly, Monthly 500,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/755-monthly-monthly-500000-credits-post-api-v1-verify-batch/llms.txt): $1.51 per 1,000, 0% complete, live
- [EmailListChecker, $1,259 monthly, Monthly 1,000,000 credits, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/1259-monthly-monthly-1000000-credits-post-api-v1-verify-batch/llms.txt): $1.259 per 1,000, 0% complete, live
- [EmailListChecker, $180 yearly, Annual 5,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/180-yearly-annual-5000-credits-a-month-post-api-v1-verify-batch/llms.txt): $3.00 per 1,000, 0% complete, live
- [EmailListChecker, $306 yearly, Annual 10,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/306-yearly-annual-10000-credits-a-month-post-api-v1-verify-batch/llms.txt): $2.55 per 1,000, 0% complete, live
- [EmailListChecker, $621 yearly, Annual 25,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/621-yearly-annual-25000-credits-a-month-post-api-v1-verify-batch/llms.txt): $2.07 per 1,000, 0% complete, live
- [EmailListChecker, $1,125 yearly, Annual 50,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/1125-yearly-annual-50000-credits-a-month-post-api-v1-verify-batch/llms.txt): $1.875 per 1,000, 0% complete, live
- [EmailListChecker, $1,884 yearly, Annual 100,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/1884-yearly-annual-100000-credits-a-month-post-api-v1-verify-batch/llms.txt): $1.57 per 1,000, 0% complete, live
- [EmailListChecker, $4,092 yearly, Annual 250,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/4092-yearly-annual-250000-credits-a-month-post-api-v1-verify-batch/llms.txt): $1.364 per 1,000, 0% complete, live
- [EmailListChecker, $7,548 yearly, Annual 500,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/7548-yearly-annual-500000-credits-a-month-post-api-v1-verify-batch/llms.txt): $1.258 per 1,000, 0% complete, live
- [EmailListChecker, $12,588 yearly, Annual 1,000,000 credits a month, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/12588-yearly-annual-1000000-credits-a-month-post-api-v1-verify-batch/llms.txt): $1.049 per 1,000, 0% complete, live

## EmailListChecker's calls for this API (2)

- `POST /api/v1/verify/batch`: [EmailListChecker, free, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/free-post-api-v1-verify-batch/llms.txt)
- `POST /api/v1/verify`: [EmailListChecker, free, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/emaillistchecker/free-post-api-v1-verify/llms.txt)

## EmailListChecker's APIs (2)

- [EmailListChecker: email finder API pricing, 25 plans](https://datacircle.dev/find-email-apis/emaillistchecker/free/llms.txt)
- [EmailListChecker: email verification API pricing, 25 plans, POST /api/v1/verify/batch](https://datacircle.dev/validate-email-apis/emaillistchecker/free-post-api-v1-verify-batch/llms.txt)

## EmailListChecker: email verification API alternatives

- [Verifalia, $2,388 yearly](https://datacircle.dev/validate-email-apis/verifalia/2388-yearly/llms.txt): $1.047 per 1,000, 67% complete, live
- [WarmySender, $377.88 yearly, Enterprise Annual (55% off), POST /verification/batches](https://datacircle.dev/validate-email-apis/warmysender/377-88-yearly-enterprise-annual-55-off-post-verification-batches/llms.txt): $1.05 per 1,000, 33% complete, live
- [HeroBounce, top-up from $5.25, Pay As You Go, under 10,000 credits, POST /validation/single](https://datacircle.dev/validate-email-apis/herobounce/top-up-from-5-25-pay-as-you-go-under-10000-credits-post-validation-single/llms.txt): $1.05 per 1,000, 67% complete, live
- [Emails Checker, $10.50 pack](https://datacircle.dev/validate-email-apis/emails-checker/10-50-pack/llms.txt): $1.05 per 1,000, 50% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://platform.emaillistchecker.io/agent-gateway/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.emaillistchecker.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.emaillistchecker.io/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.emaillistchecker.io/legal/acceptable-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.emaillistchecker.io/legal/eula?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.emaillistchecker.io/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.emaillistchecker.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing