# BounceZero, free, POST /verify/bulk: Email verification 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 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.
We haven't run BounceZero through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
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/bouncezero/free-post-verify-bulk
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://bouncezero.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.bouncezero.io/api/v1/verify/bulk`
- API key: with the plan, on https://bouncezero.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.bouncezero.io/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#verify-bulk-json
- Sold by: BounceZero (https://bouncezero.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-10-21

## 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 Single Email · Verify Batch · Verify Realtime (SSE) · Verify Bulk (CSV Upload)

## 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

- Freshness: 7 days
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- 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: 10,000

## Speed

- Answer: by polling or webhook

## The call

- You send: emails. Optional: Idempotency-Key
- Method: POST
- Path: /verify/bulk

## About the plan

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

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

job ID, status, total, completed, results, email hash, score, classification, is deliverable, internal classification, limit, offset, has more

## BounceZero's plans (10)

- [BounceZero, free, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/free-post-verify-bulk/llms.txt): $0.00 per 1,000, 50% complete, 7 days
- [BounceZero, $6 pack, Starter, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/6-pack-starter-post-verify-bulk/llms.txt): $3.00 per 1,000, 50% complete, 7 days
- [BounceZero, $15 pack, Growth, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/15-pack-growth-post-verify-bulk/llms.txt): $3.00 per 1,000, 50% complete, 7 days
- [BounceZero, $30 pack, Professional, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/30-pack-professional-post-verify-bulk/llms.txt): $3.00 per 1,000, 50% complete, 7 days
- [BounceZero, $140 pack, Business, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/140-pack-business-post-verify-bulk/llms.txt): $2.80 per 1,000, 50% complete, 7 days
- [BounceZero, $280 pack, Scale, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/280-pack-scale-post-verify-bulk/llms.txt): $2.80 per 1,000, 50% complete, 7 days
- [BounceZero, $650 pack, Pro Scale, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/650-pack-pro-scale-post-verify-bulk/llms.txt): $2.60 per 1,000, 50% complete, 7 days
- [BounceZero, $1,200 pack, Enterprise, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/1200-pack-enterprise-post-verify-bulk/llms.txt): $2.40 per 1,000, 50% complete, 7 days
- [BounceZero, $2,200 pack, Ultimate, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/2200-pack-ultimate-post-verify-bulk/llms.txt): $2.20 per 1,000, 50% complete, 7 days
- [BounceZero, contact us, Custom, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/contact-us-custom-post-verify-bulk/llms.txt): 50% complete, 7 days

## BounceZero's calls (5)

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

## BounceZero's APIs (1)

- [BounceZero: email verification API pricing, 10 plans, POST /verify/bulk](https://datacircle.dev/validate-email-apis/bouncezero/free-post-verify-bulk/llms.txt)

## BounceZero: email verification API alternatives

- [ExactVerify, $220 pack, Pay-As-You-Go from 100,000 emails, GET /v1/single](https://datacircle.dev/validate-email-apis/exactverify/220-pack-pay-as-you-go-from-100000-emails-get-v1-single/llms.txt): $2.20 per 1,000, 33% complete, live
- [Invalid Bounce, $33 monthly](https://datacircle.dev/validate-email-apis/invalid-bounce/33-monthly/llms.txt): $2.20 per 1,000, 17% complete, live
- [Heybounce, $2,200 pack, Pay As You Go 1,000,000 credits, GET /validate](https://datacircle.dev/validate-email-apis/heybounce/2200-pack-pay-as-you-go-1000000-credits-get-validate/llms.txt): $2.20 per 1,000, 50% complete, live
- [Gamalogic, $660 yearly, Annually, 25,000 Credits /Month, POST /batchemailvrf](https://datacircle.dev/validate-email-apis/gamalogic/660-yearly-annually-25000-credits-month-post-batchemailvrf/llms.txt): $2.20 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 2026-10-21.

- https://bouncezero.io/api-email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bouncezero.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bouncezero.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bouncezero.io/product-facts?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bouncezero.io/refund?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bouncezero.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.bouncezero.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing