# KaijuVerifier, free, Free, POST /api/v1/jobs: 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-jobs
- 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) · Verify a batch synchronously

## 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

- 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

## Speed

- Answer: by polling or webhook

## The call

- You send: emails. Optional: use_smtp, dedupe
- Method: POST
- Path: /api/v1/jobs

## About the plan

- Plan: Free
- Who can get it: anyone

## The 13 fields the plan's answer can hold

success, job ID, job status, emails submitted, duplicates removed, emails billed, status URL, email, safe to send, status, reason, score, suggestion

## KaijuVerifier's plans (12)

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

## 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