# Prime Verifier, free, POST /v1/verify/batch: Email verification API

> Validate a single address in real time, or a small synchronous batch of up to 30. Every check runs the full pipeline (syntax, DNS/MX, disposable, role, free provider, and a live SMTP mailbox probe) and returns a clear verdict with a graded risk score.

Prime Verifier's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Confidence.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), the best plan from Prime Verifier scores 73.0 out of 100. Prime Verifier ranks 7th of 189 providers.
This plan is free. We rank 3,886 plans for email verification APIs by price. Half the plans cost $1.998 per 1,000 emails or less.
[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.
[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.
[email-validation.org](https://datacircle.dev/validate-email-apis/email-validation-org/450-pack-1000000-credits-post-v1-validate/llms.txt), [pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/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/prime-verifier/free-post-v1-verify-batch
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://primeverifier.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.primeverifier.com/v1/verify/batch`
- API key: with the plan, on https://primeverifier.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://developers.primeverifier.com/verify?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#post-v1-verify-batch
- Sold by: Prime Verifier (https://primeverifier.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 50%
- Address: ✓
- Deliverability: ✓
- Confidence: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Verify a single email address · Upload a CSV file to start a bulk verification job · Find ONE person's email · Find many emails in ONE request · Find emails for a LARGE list in the background

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Validate a single address in real time, or a small synchronous batch of up to 30. Every check runs the full pipeline (syntax, DNS/MX, disposable, role, free provider, and a live SMTP mailbox probe) and returns a clear verdict with a graded risk score.

## Data

- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: We grant you a limited, non-exclusive, non-transferable, revocable right to use the Services during your subscription, for your own business use, subject to these Terms. You agree to use the Services lawfully and only with email data you have the right to process. You must not: Submit data you obtained unlawfully, or data you have no lawful basis to verify. Use the Services to support spam, phishing, fraud, harassment, or any deceptive or unlawful sending practice. Verify lists for the purpose of sending unsolicited bulk email in violation of anti-spam laws such as the CAN-SPAM Act, GDPR, CASL, or any other applicable law. Resell, sublicense, or expose the Services to third parties as your own without our written permission. Reverse engineer, scrape, copy, or attempt to derive the source code or underlying logic of the Services, except to the extent the law expressly permits. Probe, scan, overload, or interfere with the Services or the infrastructure behind them, or bypass any rate limit, quota, or security control. Use the Services to build a competing product or to benchmark them for a competitor without our consent.

## Plan

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

## Rate limit

- Per second: 160
- Batch: 30

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: emails, Idempotency-Key header
- Method: POST
- Path: /v1/verify/batch

## About the plan

- Plan: Free
- Who can get it: anyone 18 or older able to form a binding contract

## The 24 fields the plan's answer can hold

success, email, result, result code, sub-result, quality, free, role, disposable, catch-all, did you mean, mailbox provider, anti-spam gateway, risk score, credits charged, credits remaining, execution time, summary total, summary valid, summary invalid, summary catch-all, summary unknown, summary disposable, summary error

## Prime Verifier's plans (16)

- [Prime Verifier, free, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/free-post-v1-verify-batch/llms.txt): $0.00 per 1,000, 50% complete
- [Prime Verifier, $15 pack, Pay-As-You-Go 5,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/15-pack-pay-as-you-go-5000-credits-post-v1-verify-batch/llms.txt): $3.00 per 1,000, 50% complete
- [Prime Verifier, $75 pack, Pay-As-You-Go 50,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/75-pack-pay-as-you-go-50000-credits-post-v1-verify-batch/llms.txt): $1.50 per 1,000, 50% complete
- [Prime Verifier, $120 pack, Pay-As-You-Go 100,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/120-pack-pay-as-you-go-100000-credits-post-v1-verify-batch/llms.txt): $1.20 per 1,000, 50% complete
- [Prime Verifier, $200 pack, Pay-As-You-Go 200,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/200-pack-pay-as-you-go-200000-credits-post-v1-verify-batch/llms.txt): $1.00 per 1,000, 50% complete
- [Prime Verifier, $400 pack, Pay-As-You-Go 500,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/400-pack-pay-as-you-go-500000-credits-post-v1-verify-batch/llms.txt): $0.80 per 1,000, 50% complete
- [Prime Verifier, $650 pack, Pay-As-You-Go 1,000,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/650-pack-pay-as-you-go-1000000-credits-post-v1-verify-batch/llms.txt): $0.65 per 1,000, 50% complete
- [Prime Verifier, $1,100 pack, Pay-As-You-Go 2,000,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/1100-pack-pay-as-you-go-2000000-credits-post-v1-verify-batch/llms.txt): $0.55 per 1,000, 50% complete
- [Prime Verifier, $13.80 monthly, Monthly 5,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/13-80-monthly-monthly-5000-credits-post-v1-verify-batch/llms.txt): $2.76 per 1,000, 50% complete
- [Prime Verifier, $69 monthly, Monthly 50,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/69-monthly-monthly-50000-credits-post-v1-verify-batch/llms.txt): $1.38 per 1,000, 50% complete
- [Prime Verifier, $110.40 monthly, Monthly 100,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/110-40-monthly-monthly-100000-credits-post-v1-verify-batch/llms.txt): $1.104 per 1,000, 50% complete
- [Prime Verifier, $184 monthly, Monthly 200,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/184-monthly-monthly-200000-credits-post-v1-verify-batch/llms.txt): $0.92 per 1,000, 50% complete
- [Prime Verifier, $368 monthly, Monthly 500,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/368-monthly-monthly-500000-credits-post-v1-verify-batch/llms.txt): $0.736 per 1,000, 50% complete
- [Prime Verifier, $598 monthly, Monthly 1,000,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/598-monthly-monthly-1000000-credits-post-v1-verify-batch/llms.txt): $0.598 per 1,000, 50% complete
- [Prime Verifier, $1,012 monthly, Monthly 2,000,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/1012-monthly-monthly-2000000-credits-post-v1-verify-batch/llms.txt): $0.506 per 1,000, 50% complete
- [Prime Verifier, contact us, Custom, over 2,000,000 credits, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/contact-us-custom-over-2000000-credits-post-v1-verify-batch/llms.txt): 50% complete

## Prime Verifier's calls for this API (3)

- `POST /v1/jobs`: [Prime Verifier, free, POST /v1/jobs](https://datacircle.dev/validate-email-apis/prime-verifier/free-post-v1-jobs/llms.txt)
- `POST /v1/verify/single`: [Prime Verifier, free, POST /v1/verify/single](https://datacircle.dev/validate-email-apis/prime-verifier/free-post-v1-verify-single/llms.txt)
- `POST /v1/verify/batch`: [Prime Verifier, free, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/free-post-v1-verify-batch/llms.txt)

## Prime Verifier's APIs (2)

- [Prime Verifier: email finder API pricing, 16 plans, POST /v1/finder/jobs](https://datacircle.dev/find-email-apis/prime-verifier/free-post-v1-finder-jobs/llms.txt)
- [Prime Verifier: email finder API pricing, 16 plans, POST /v1/finder/batch](https://datacircle.dev/find-email-apis/prime-verifier/free-post-v1-finder-batch/llms.txt)
- [Prime Verifier: email finder API pricing, 16 plans, POST /v1/finder](https://datacircle.dev/find-email-apis/prime-verifier/free-post-v1-finder/llms.txt)
- [Prime Verifier: email verification API pricing, 16 plans, POST /v1/verify/batch](https://datacircle.dev/validate-email-apis/prime-verifier/free-post-v1-verify-batch/llms.txt)

## Prime Verifier: email verification API alternatives

- [Mailnjoy, €450 pack, 1,000,000 credits, POST /v2/unitary, Unitary validation (simple)](https://datacircle.dev/validate-email-apis/mailnjoy/450-pack-1000000-credits-post-v2-unitary-unitary-validation-simple/llms.txt): $0.506 per 1,000, 33% complete, live
- [NameAPI, €4,500 pack](https://datacircle.dev/validate-email-apis/nameapi/4500-pack/llms.txt): $0.506 per 1,000, 17% complete
- [GMass, $22,000 yearly](https://datacircle.dev/validate-email-apis/gmass/22000-yearly/llms.txt): $0.509 per 1,000, 33% complete, live
- [ListWise, $2,559 monthly, Monthly 5 Million, GET /clean/deep.php](https://datacircle.dev/validate-email-apis/listwise/2559-monthly-monthly-5-million-get-clean-deep-php/llms.txt): $0.512 per 1,000, 33% 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 2026-11-05.

- https://api.primeverifier.com/swagger/v1/swagger.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developers.primeverifier.com/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developers.primeverifier.com/rate-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developers.primeverifier.com/results?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developers.primeverifier.com/verify?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://primeverifier.com/email-verification-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://primeverifier.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://primeverifier.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing