# BounceZero, free, Free, POST /verify/bulk/upload: Email validation API

> Integrate email verification directly into your sign-up forms, CRM pipelines, and data workflows with a single API call. BounceZero returns 65+ signal fields in JSON - including classification, score, SMTP result, catch-all status, and plain-English explanation.

BounceZero'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/bouncezero/free-free-post-verify-bulk-upload
- Get it: https://bouncezero.io/pricing
- Its API docs: https://docs.bouncezero.io/#verify-bulk-csv
- Sold by: BounceZero (https://bouncezero.io)
- 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 Single Email · Verify Batch · Verify Realtime (SSE) · Verify Bulk (JSON)

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Integrate email verification directly into your sign-up forms, CRM pipelines, and data workflows with a single API call. BounceZero returns 65+ signal fields in JSON - including classification, score, SMTP result, catch-all status, and plain-English explanation.

## Data

- Keep data: no limit
- Use data: You may not access or use the Services for any purpose other than that for which we make the Services available. The Services may not be used in connection with any commercial endeavours except those that are specifically endorsed or approved by us. As a user of the Services, you agree not to: [...] Systematically retrieve data or other content from the Services to create or compile, directly or indirectly, a collection, compilation, database, or directory without written permission from us. [...] Use any information obtained from the Services in order to harass, abuse, or harm another person. [...] Use the Services in a manner inconsistent with any applicable laws or regulations. [...] Use the Services to validate email addresses for the purpose of sending unsolicited commercial email (spam) in violation of applicable anti-spam legislation, including but not limited to the CAN-SPAM Act, GDPR, and PECR.

## Plan

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

## Rate limit

- Per second: 0.5
- Batch: 2,000,000

## Speed

- Answer: by polling or webhook

## The call

- You send: CSV file. Optional: Idempotency-Key
- Method: POST
- Path: /verify/bulk/upload

## About the plan

- Plan: Free
- Who can get it: anyone 18 or over with the legal capacity to accept the terms

## The 9 fields the plan's answer can hold

job ID, total emails, deduplicated, status, email hash, score, classification, is deliverable, internal classification

## BounceZero's plans (10)

- [BounceZero, free, Free, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/free-free-post-verify-bulk-upload/llms.txt): $0.00 per 1,000, 50% complete
- [BounceZero, $6 pack, Starter, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/6-pack-starter-post-verify-bulk-upload/llms.txt): $3.00 per 1,000, 50% complete
- [BounceZero, $15 pack, Growth, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/15-pack-growth-post-verify-bulk-upload/llms.txt): $3.00 per 1,000, 50% complete
- [BounceZero, $30 pack, Professional, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/30-pack-professional-post-verify-bulk-upload/llms.txt): $3.00 per 1,000, 50% complete
- [BounceZero, $140 pack, Business, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/140-pack-business-post-verify-bulk-upload/llms.txt): $2.80 per 1,000, 50% complete
- [BounceZero, $280 pack, Scale, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/280-pack-scale-post-verify-bulk-upload/llms.txt): $2.80 per 1,000, 50% complete
- [BounceZero, $650 pack, Pro Scale, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/650-pack-pro-scale-post-verify-bulk-upload/llms.txt): $2.60 per 1,000, 50% complete
- [BounceZero, $1,200 pack, Enterprise, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/1200-pack-enterprise-post-verify-bulk-upload/llms.txt): $2.40 per 1,000, 50% complete
- [BounceZero, $2,200 pack, Ultimate, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/2200-pack-ultimate-post-verify-bulk-upload/llms.txt): $2.20 per 1,000, 50% complete
- [BounceZero, contact us, Custom, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/contact-us-custom-post-verify-bulk-upload/llms.txt): 50% complete

## BounceZero's calls (5)

- `POST /verify/batch`: [BounceZero, free, Free, POST /verify/batch](https://datacircle.dev/validate-email-apis/bouncezero/free-free-post-verify-batch/llms.txt)
- `POST /verify/bulk/upload`: [BounceZero, free, Free, POST /verify/bulk/upload](https://datacircle.dev/validate-email-apis/bouncezero/free-free-post-verify-bulk-upload/llms.txt)
- `POST /verify/bulk`: [BounceZero, free, Free, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/free-free-post-verify-bulk/llms.txt)
- `POST /verify/realtime`: [BounceZero, free, Free, POST /verify/realtime](https://datacircle.dev/validate-email-apis/bouncezero/free-free-post-verify-realtime/llms.txt)
- `POST /verify`: [BounceZero, free, Free, POST /verify](https://datacircle.dev/validate-email-apis/bouncezero/free-free-post-verify/llms.txt)

## Similar plans of other providers

- [Databar, free](https://datacircle.dev/validate-email-apis/databar/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [Bouncify, free](https://datacircle.dev/validate-email-apis/bouncify/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Clearout, free](https://datacircle.dev/validate-email-apis/clearout/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Byteplant, free, Trial, POST /api/bulk-verify](https://datacircle.dev/validate-email-apis/byteplant/free-trial-post-api-bulk-verify/llms.txt): $0.00 per 1,000, 17% complete

## 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://bouncezero.io/api-email-validation
- https://bouncezero.io/pricing
- https://bouncezero.io/product-facts
- https://bouncezero.io/refund
- https://bouncezero.io/terms
- https://docs.bouncezero.io