# Clearout, free, Freemium, POST /email_verify/instant, Instant Verify, full: Email verification API

> Deep Verify mode runs multi-layer SMTP analysis and SEG signature detection for a more reliable determination of mailbox existence, particularly on catch-all-heavy domains

Clearout's email verification API on its Freemium plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Company.
We rank 3,228 plans by price. [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.
[MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt), [Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/499-monthly/llms.txt) and [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-instant-instant-verify-full
- [Best email verification API in 2026: providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://clearout.io/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.clearout.io/v2/email_verify/instant`, Instant Verify, full
- API key: with the plan, on https://clearout.io/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.clearout.io/developers/api/email-verify?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#post-email_verify-instant
- Sold by: Clearout (https://clearout.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-10-31

## In the answer

- Completeness: 50%
- Address: ✓
- Deliverability: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: 24 hours
- Also pays for: from the same budget: Email Verifier Bulk · Email Finder · Reverse Lookup

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Deep Verify mode runs multi-layer SMTP analysis and SEG signature detection for a more reliable determination of mailbox existence, particularly on catch-all-heavy domains

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: any, within applicable data protection and privacy laws

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 20 calls, once
- Expires: never

## Rate limit

- Per second: 0.05
- Batch: 1

## Speed

- Answer: in the call or by webhook

## The call

- You send: email. Optional: timeout, webhook subscribed to email_verifier.instant.completed
- Method: POST
- Path: /email_verify/instant

## About the plan

- Plan: Freemium
- Who can get it: anyone

## The 19 fields the plan's answer can hold

success, email address, safe to send, status, verified on, time taken, sub-status code, sub-status description, MX record, SMTP provider, account, domain, disposable, free, role, gibberish, did you mean, profile, bounce type

## Clearout's plans (28)

- [Clearout, free, Freemium, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-instant-instant-verify-full/llms.txt): $0.00 per 1,000, 50% complete, live
- [Clearout, $40 pack, 5,000 credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/40-pack-5000-credits-post-email-verify-instant-instant-verify-full/llms.txt): $40.00 per 1,000, 50% complete, live
- [Clearout, $65 pack, 10,000 credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/65-pack-10000-credits-post-email-verify-instant-instant-verify-full/llms.txt): $32.50 per 1,000, 50% complete, live
- [Clearout, $400 pack, 100,000 credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/400-pack-100000-credits-post-email-verify-instant-instant-verify-full/llms.txt): $20.00 per 1,000, 50% complete, live
- [Clearout, $750 pack, 250,000 credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/750-pack-250000-credits-post-email-verify-instant-instant-verify-full/llms.txt): $15.00 per 1,000, 50% complete, live
- [Clearout, $1,000 pack, 500,000 credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/1000-pack-500000-credits-post-email-verify-instant-instant-verify-full/llms.txt): $10.00 per 1,000, 50% complete, live
- [Clearout, $1,400 pack, 1 million credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/1400-pack-1-million-credits-post-email-verify-instant-instant-verify-full/llms.txt): $7.00 per 1,000, 50% complete, live
- [Clearout, $5,500 pack, 5 million credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/5500-pack-5-million-credits-post-email-verify-instant-instant-verify-full/llms.txt): $5.50 per 1,000, 50% complete, live
- [Clearout, $10,000 pack, 10 million credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/10000-pack-10-million-credits-post-email-verify-instant-instant-verify-full/llms.txt): $5.00 per 1,000, 50% complete, live
- [Clearout, $23 monthly, Starter, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/23-monthly-starter-post-email-verify-instant-instant-verify-full/llms.txt): $38.333 per 1,000, 50% complete, live
- [Clearout, $58 monthly, Pro 10K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/58-monthly-pro-10k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $29.00 per 1,000, 50% complete, live
- [Clearout, $146 monthly, Pro 25K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/146-monthly-pro-25k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $29.20 per 1,000, 50% complete, live
- [Clearout, $292 monthly, Pro 50K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/292-monthly-pro-50k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $29.20 per 1,000, 50% complete, live
- [Clearout, $360 monthly, Pro 100K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/360-monthly-pro-100k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $18.00 per 1,000, 50% complete, live
- [Clearout, $675 monthly, Pro 250K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/675-monthly-pro-250k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $13.50 per 1,000, 50% complete, live
- [Clearout, $900 monthly, Pro 500K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/900-monthly-pro-500k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $9.00 per 1,000, 50% complete, live
- [Clearout, $1,260 monthly, Pro 1M Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/1260-monthly-pro-1m-credits-post-email-verify-instant-instant-verify-full/llms.txt): $6.30 per 1,000, 50% complete, live
- [Clearout, $4,950 monthly, Pro 5M Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/4950-monthly-pro-5m-credits-post-email-verify-instant-instant-verify-full/llms.txt): $4.95 per 1,000, 50% complete, live
- [Clearout, $192 yearly, Starter, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/192-yearly-starter-post-email-verify-instant-instant-verify-full/llms.txt): $26.667 per 1,000, 50% complete, live
- [Clearout, $384 yearly, Pro 10K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/384-yearly-pro-10k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $16.00 per 1,000, 50% complete, live
- [Clearout, $720 yearly, Pro 25K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/720-yearly-pro-25k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $12.00 per 1,000, 50% complete, live
- [Clearout, $960 yearly, Pro 50K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/960-yearly-pro-50k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $8.00 per 1,000, 50% complete, live
- [Clearout, $1,344 yearly, Pro 100K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/1344-yearly-pro-100k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $5.60 per 1,000, 50% complete, live
- [Clearout, $3,360 yearly, Pro 250K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/3360-yearly-pro-250k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $5.60 per 1,000, 50% complete, live
- [Clearout, $5,280 yearly, Pro 500K Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/5280-yearly-pro-500k-credits-post-email-verify-instant-instant-verify-full/llms.txt): $4.40 per 1,000, 50% complete, live
- [Clearout, $9,600 yearly, Pro 1M Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/9600-yearly-pro-1m-credits-post-email-verify-instant-instant-verify-full/llms.txt): $4.00 per 1,000, 50% complete, live
- [Clearout, $48,000 yearly, Pro 5M Credits, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/48000-yearly-pro-5m-credits-post-email-verify-instant-instant-verify-full/llms.txt): $4.00 per 1,000, 50% complete, live
- [Clearout, contact us, Enterprise, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/contact-us-enterprise-post-email-verify-instant-instant-verify-full/llms.txt): 50% complete, live

## Clearout's calls for this API (8)

- `POST /email/verify/business`: [Clearout, free, Freemium, POST /email/verify/business](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-business/llms.txt)
- `POST /email/verify/catchall`: [Clearout, free, Freemium, POST /email/verify/catchall](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-catchall/llms.txt)
- `POST /email/verify/disposable`: [Clearout, free, Freemium, POST /email/verify/disposable](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-disposable/llms.txt)
- `POST /email/verify/free`: [Clearout, free, Freemium, POST /email/verify/free](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-free/llms.txt)
- `POST /email/verify/gibberish`: [Clearout, free, Freemium, POST /email/verify/gibberish](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-gibberish/llms.txt)
- `POST /email_verify/instant`, Instant Verify: [Clearout, free, Freemium, POST /email_verify/instant, Instant Verify](https://datacircle.dev/validate-email-apis/clearout/free/llms.txt)
- `POST /email_verify/instant`, Instant Verify, full: [Clearout, free, Freemium, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-instant-instant-verify-full/llms.txt)
- `POST /email/verify/role`: [Clearout, free, Freemium, POST /email/verify/role](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-role/llms.txt)

## Clearout's APIs (5)

- [Clearout: email finder API pricing, 28 plans](https://datacircle.dev/find-email-apis/clearout/free/llms.txt)
- [Clearout: reverse email lookup API pricing, 28 plans](https://datacircle.dev/reverse-email-lookup-apis/clearout/free/llms.txt)
- [Clearout: LinkedIn profile API pricing, 28 plans](https://datacircle.dev/linkedin-profile-apis/clearout/free/llms.txt)
- [Clearout: email verification API pricing, 28 plans, POST /email_verify/instant, Instant Verify, full](https://datacircle.dev/validate-email-apis/clearout/free-freemium-post-email-verify-instant-instant-verify-full/llms.txt)
- [Clearout: company enrichment API pricing, 28 plans, GET /public/companies/autocomplete](https://datacircle.dev/company-enrichment-apis/clearout/free/llms.txt)
- [Clearout: company enrichment API pricing, 28 plans, GET /reverse_lookup/domain](https://datacircle.dev/company-enrichment-apis/clearout/free-freemium-get-reverse-lookup-domain/llms.txt)

## Clearout: email verification API alternatives

- [Verimail, $4 pack](https://datacircle.dev/validate-email-apis/verimail/4-pack/llms.txt): $4.00 per 1,000, 50% complete, live
- [Easy Email Verification, $200 pack, Pay-as-you-go, 50,000 emails, POST /bulk/upload](https://datacircle.dev/validate-email-apis/easy-email-verification/200-pack-pay-as-you-go-50000-emails-post-bulk-upload/llms.txt): $4.00 per 1,000, 50% complete, live
- [ExactVerify, $8 pack, Pay-As-You-Go from 2,000 emails, GET /v1/single](https://datacircle.dev/validate-email-apis/exactverify/8-pack-pay-as-you-go-from-2000-emails-get-v1-single/llms.txt): $4.00 per 1,000, 33% complete, live
- [VerifyAnyEmail, $4 pack, 1,000 credits, POST /v1/verify](https://datacircle.dev/validate-email-apis/verifyanyemail/4-pack-1000-credits-post-v1-verify/llms.txt): $4.00 per 1,000, 67% 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 2026-10-31.

- https://api.clearout.io/public/compare_products?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.clearout.io/public/products?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/clearout-data-processing-agreement/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/component---src-pages-pricing-index-js-6021f7f7b0cf6291093f.js?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/email-verifier/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/pricing-guide/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/reverse-lookup/linkedin/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://clearout.io/terms-condition/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/developers/api/email-verify?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/developers/api/email-verify.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/developers/api/overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/developers/api/reverse-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/email-verifier/faqs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/help-and-support/featured-answered/credits-and-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.clearout.io/reverse-lookup/faqs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing