# ClearBounce, free, credits, POST /bulk/upload: Email verification API

> Upload the file, poll the job, download the results — the job runs in parallel and returns every address labelled.

ClearBounce's email verification API on its Free credits plan. It costs $0.00 per 1,000 emails. It returns 4 of the 6 key fields we check: Address, Deliverability, Confidence, Company.
The cheapest of the 1,849 plans we rank by price is [treg, top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt). treg asks one provider after another until one answers. treg costs $0.00 per 1,000 emails on average. You pay $26.95 per 1,000 emails when no provider answers.

- This page: https://datacircle.dev/validate-email-apis/clearbounce/free-credits-post-bulk-upload
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://clearbounce.net/pricing
- Its API docs: https://docs.clearbounce.net/api-reference/batch-verification#step-1-upload-emails
- Sold by: ClearBounce (https://clearbounce.net)
- Checked: 2026-10-27

## In the answer

- Completeness: 67%
- Address: ✓
- Deliverability: ✓
- Confidence: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Single Verification

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Upload the file, poll the job, download the results — the job runs in parallel and returns every address labelled.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: You agree NOT to use our services to: Send spam or unsolicited commercial emails, Harvest email addresses for unauthorized purposes, Violate any applicable laws or regulations, Infringe on intellectual property rights, Attempt to gain unauthorized access to our systems, Interfere with or disrupt our services

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 results, once

## Rate limit

- Per second: 1.67
- Concurrent: 5
- Batch: 10,000

## Speed

- Answer: by polling

## The call

- You send: emails
- Method: POST
- Path: /bulk/upload

## About the plan

- Plan: Free credits
- Who can get it: anyone at least 18 years old, or with parental consent

## The 25 fields the plan's answer can hold

success, email, status, sub-status, reason, score, deliverable, toxicity, syntax valid, MX records, SMTP valid, disposable, role-based, free provider, catch-all, typo suggestion, domain, local part, MX host, provider, DNS type, verified on, processing time, risk factors, original CSV data

## ClearBounce's plans (18)

- [ClearBounce, free, credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/free-credits-post-bulk-upload/llms.txt): $0.00 per 1,000, 67% complete, live
- [ClearBounce, $4 pack, 1,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/4-pack-1000-credits-post-bulk-upload/llms.txt): $4.00 per 1,000, 67% complete, live
- [ClearBounce, $17.50 pack, 5,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/17-50-pack-5000-credits-post-bulk-upload/llms.txt): $3.50 per 1,000, 67% complete, live
- [ClearBounce, $30 pack, 10,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/30-pack-10000-credits-post-bulk-upload/llms.txt): $3.00 per 1,000, 67% complete, live
- [ClearBounce, $125 pack, 50,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/125-pack-50000-credits-post-bulk-upload/llms.txt): $2.50 per 1,000, 67% complete, live
- [ClearBounce, $200 pack, 100,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/200-pack-100000-credits-post-bulk-upload/llms.txt): $2.00 per 1,000, 67% complete, live
- [ClearBounce, $375 pack, 250,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/375-pack-250000-credits-post-bulk-upload/llms.txt): $1.50 per 1,000, 67% complete, live
- [ClearBounce, $625 pack, 500,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/625-pack-500000-credits-post-bulk-upload/llms.txt): $1.25 per 1,000, 67% complete, live
- [ClearBounce, $1,000 pack, 1,000,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/1000-pack-1000000-credits-post-bulk-upload/llms.txt): $1.00 per 1,000, 67% complete, live
- [ClearBounce, $3.20 monthly, Monthly Subscription 1,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/3-20-monthly-monthly-subscription-1000-credits-post-bulk-upload/llms.txt): $3.20 per 1,000, 67% complete, live
- [ClearBounce, $14 monthly, Monthly Subscription 5,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/14-monthly-monthly-subscription-5000-credits-post-bulk-upload/llms.txt): $2.80 per 1,000, 67% complete, live
- [ClearBounce, $24 monthly, Monthly Subscription 10,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/24-monthly-monthly-subscription-10000-credits-post-bulk-upload/llms.txt): $2.40 per 1,000, 67% complete, live
- [ClearBounce, $100 monthly, Monthly Subscription 50,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/100-monthly-monthly-subscription-50000-credits-post-bulk-upload/llms.txt): $2.00 per 1,000, 67% complete, live
- [ClearBounce, $160 monthly, Monthly Subscription 100,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/160-monthly-monthly-subscription-100000-credits-post-bulk-upload/llms.txt): $1.60 per 1,000, 67% complete, live
- [ClearBounce, $300 monthly, Monthly Subscription 250,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/300-monthly-monthly-subscription-250000-credits-post-bulk-upload/llms.txt): $1.20 per 1,000, 67% complete, live
- [ClearBounce, $500 monthly, Monthly Subscription 500,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/500-monthly-monthly-subscription-500000-credits-post-bulk-upload/llms.txt): $1.00 per 1,000, 67% complete, live
- [ClearBounce, $800 monthly, Monthly Subscription 1,000,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/800-monthly-monthly-subscription-1000000-credits-post-bulk-upload/llms.txt): $0.80 per 1,000, 67% complete, live
- [ClearBounce, contact us, More than 1,000,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/contact-us-more-than-1000000-credits-post-bulk-upload/llms.txt): 67% complete, live

## ClearBounce's calls for this API (2)

- `POST /bulk/upload`: [ClearBounce, free, credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/free-credits-post-bulk-upload/llms.txt)
- `POST /verify`: [ClearBounce, free, credits, POST /verify](https://datacircle.dev/validate-email-apis/clearbounce/free-credits-post-verify/llms.txt)

## ClearBounce's APIs (2)

- [ClearBounce: email finder API pricing, 18 plans](https://datacircle.dev/find-email-apis/clearbounce/free/llms.txt)
- [ClearBounce: email verification API pricing, 18 plans, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/free-credits-post-bulk-upload/llms.txt)

## ClearBounce: email verification API alternatives

- [BillionVerify, $80 pack, Professional, POST /verify/bulk](https://datacircle.dev/validate-email-apis/billionverify/80-pack-professional-post-verify-bulk/llms.txt): $0.80 per 1,000, 67% complete, live
- [Verimail, $200 pack](https://datacircle.dev/validate-email-apis/verimail/200-pack/llms.txt): $0.80 per 1,000, 50% complete, live
- [BetterEnrich, $2,000 pack, One-time Payment, 100K credits, POST /api/v1/verify-normal-email](https://datacircle.dev/validate-email-apis/betterenrich/2000-pack-one-time-payment-100k-credits-post-api-v1-verify-normal-email/llms.txt): $0.80 per 1,000, 17% complete, live
- [Clearout, $9,600 yearly, Pro 1M Credits, POST /email_verify/instant](https://datacircle.dev/validate-email-apis/clearout/9600-yearly/llms.txt): $0.80 per 1,000, 50% 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 2026-10-27.

- https://clearbounce.net/audiences/developers
- https://clearbounce.net/email-verification-api
- https://clearbounce.net/openapi.json
- https://clearbounce.net/pricing
- https://clearbounce.net/terms
- https://docs.clearbounce.net
- https://docs.clearbounce.net/api-reference/batch-verification
- https://docs.clearbounce.net/api-reference/overview
- https://docs.clearbounce.net/integration-guidelines
- https://docs.clearbounce.net/terminology