# KaijuVerifier, free, Free, POST /api/v1/verify-batch: Email validation API

> Block fake signups, burner accounts, and hard bounces at the edge in 3 lines of code.

KaijuVerifier's email validation API on its Free plan, $0.00 per 1,000 emails. 3 of the 6 key fields: Address, Its check, Confidence.

- This page: https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-verify-batch
- Get it: https://kaijuverifier.com/pricing
- Its API docs: https://kaijuverifier.com/api-docs
- Sold by: KaijuVerifier (https://kaijuverifier.com)
- Checked: 2026-10-20

## In the answer

- Completeness: 50%
- Address: ✓
- Its check: ✓
- Confidence: ✓

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Per: result
- Also pays for: from the same budget: Verify a single email (authenticated) · Submit an async bulk job

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## Bounce

- Bounce refund: the verification credits in full, when the campaign's hard-bounce rate exceeds 2% on addresses verified as Valid

## In their words

- Their pitch: Block fake signups, burner accounts, and hard bounces at the edge in 3 lines of code.

## Data

- Freshness: live
- Keep data: no limit
- Use data: You agree NOT to use the Service for: Sending SPAM or unsolicited bulk emails, Verifying email lists obtained illegally or without consent, Any activity that violates GDPR, CAN-SPAM, or other data protection laws, Attempting to reverse engineer, hack, or abuse the Service, Reselling or redistributing verification results without authorization

## Plan

- Pay: $0
- You get: 100 credits a month
- Enough for: 100 results a month

## Rate limit

- Batch: 10,000

## Speed

- Answer: in the call

## The call

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

## About the plan

- Plan: Free
- Who can get it: anyone

## The 29 fields the plan's answer can hold

success, batch ID, batch status, emails checked, valid emails, invalid emails, accuracy, email, normalized email, safe to send, status, reason, confidence, score, grade, suggestion, syntax valid, DNS valid, SMTP check, catch-all, disposable, role address, free provider, MX count, MX providers, MX grade, quota limit, quota used this month, quota remaining

## KaijuVerifier's plans (12)

- [KaijuVerifier, free, Free, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-verify-batch/llms.txt): $0.00 per 1,000, 50% complete, live
- [KaijuVerifier, $19 pack, 5,000 Credits, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/19-pack-5000-credits-post-api-v1-verify-batch/llms.txt): $3.80 per 1,000, 50% complete, live
- [KaijuVerifier, $79 pack, 25,000 Credits, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/79-pack-25000-credits-post-api-v1-verify-batch/llms.txt): $3.16 per 1,000, 50% complete, live
- [KaijuVerifier, $249 pack, 100,000 Credits, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/249-pack-100000-credits-post-api-v1-verify-batch/llms.txt): $2.49 per 1,000, 50% complete, live
- [KaijuVerifier, $899 pack, 500,000 Credits, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/899-pack-500000-credits-post-api-v1-verify-batch/llms.txt): $1.798 per 1,000, 50% complete, live
- [KaijuVerifier, $19 monthly, Starter, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/19-monthly-starter-post-api-v1-verify-batch/llms.txt): $1.90 per 1,000, 50% complete, live
- [KaijuVerifier, $49 monthly, Growth, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/49-monthly-growth-post-api-v1-verify-batch/llms.txt): $0.98 per 1,000, 50% complete, live
- [KaijuVerifier, $149 monthly, Scale, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/149-monthly-scale-post-api-v1-verify-batch/llms.txt): $0.596 per 1,000, 50% complete, live
- [KaijuVerifier, $182.04 yearly, Starter, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/182-04-yearly-starter-post-api-v1-verify-batch/llms.txt): $1.517 per 1,000, 50% complete, live
- [KaijuVerifier, $470.04 yearly, Growth, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/470-04-yearly-growth-post-api-v1-verify-batch/llms.txt): $0.783 per 1,000, 50% complete, live
- [KaijuVerifier, $1,430.04 yearly, Scale, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/1430-04-yearly-scale-post-api-v1-verify-batch/llms.txt): $0.477 per 1,000, 50% complete, live
- [KaijuVerifier, contact us, Enterprise, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/contact-us-enterprise-post-api-v1-verify-batch/llms.txt): 50% complete, live

## KaijuVerifier's calls (3)

- `POST /api/v1/jobs`: [KaijuVerifier, free, Free, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-jobs/llms.txt)
- `POST /api/v1/verify-batch`: [KaijuVerifier, free, Free, POST /api/v1/verify-batch](https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-verify-batch/llms.txt)
- `POST /api/v1/verify-single`: [KaijuVerifier, free, Free, POST /api/v1/verify-single](https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-verify-single/llms.txt)

## Similar plans of other providers

- [Kickbox, free, 100 verifications, GET /verify](https://datacircle.dev/validate-email-apis/kickbox/free-100-verifications-get-verify/llms.txt): $0.00 per 1,000, 67% complete, live
- [lemlist, free](https://datacircle.dev/validate-email-apis/lemlist/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [Kitt AI, free](https://datacircle.dev/validate-email-apis/kitt-ai/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [Limadata, free](https://datacircle.dev/validate-email-apis/limadata/free/llms.txt): $0.00 per 1,000, 17% 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 2026-10-20.

- https://kaijuverifier.com/api-docs
- https://kaijuverifier.com/dashboard/billing
- https://kaijuverifier.com/email-verification-api
- https://kaijuverifier.com/legal/notice
- https://kaijuverifier.com/legal/terms
- https://kaijuverifier.com/openapi.json
- https://kaijuverifier.com/pricing