# Contact Verify, free: Email verification API

> Contact Verify (verify-x402) preview is free: syntax, MX, disposable, and role account. It does not check the mailbox (mailbox_checked is false).

Contact Verify's Free plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields. Contact Verify's docs list 2: Address, Deliverability.
You get up to 1,296,000 calls a month.
We ran Contact Verify in [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt). We didn't score any Contact Verify plan.
We rank 4,207 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. This plan and 63 others tie for the lowest price per 1,000 emails of the 4,207 plans. [See the best free email verification API plan.](https://datacircle.dev/best-email-verification-api.txt)
[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.
[pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt), [looot](https://datacircle.dev/validate-email-apis/looot/top-up/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/contact-verify/free
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://getcontactverify.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://getcontactverify.com/verify/email/preview`
- API key: not needed
- Its API docs: https://getcontactverify.com/docs/email-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Contact Verify (https://getcontactverify.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 33%
- Address: ✓
- Deliverability: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Contact Verify (verify-x402) preview is free: syntax, MX, disposable, and role account. It does not check the mailbox (mailbox_checked is false).

## Data

- What it checks: format, mail servers, disposable domains, role addresses
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- Enough for: 1,296,000 calls a month

## Rate limit

- Per second: 0.5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: POST
- Path: /verify/email/preview

## About the plan

- Plan: Free
- Who can get it: anyone

## The 8 fields the plan's answer can hold

preview, mailbox checked, email address, valid syntax, MX found, disposable, role, upgrade

## Contact Verify's plans (2)

- [Contact Verify, free](https://datacircle.dev/validate-email-apis/contact-verify/free/llms.txt): $0.00 per 1,000, 33% complete
- [Contact Verify, pay as you go, Pay per call, POST /verify/email/basic](https://datacircle.dev/validate-email-apis/contact-verify/pay-as-you-go-pay-per-call-post-verify-email-basic/llms.txt): $2.00 per 1,000, 50% complete

## Contact Verify's calls for this API (4)

- `POST /verify/email/preview`: [Contact Verify, free](https://datacircle.dev/validate-email-apis/contact-verify/free/llms.txt)
- `POST /verify/email/basic`: [Contact Verify, pay as you go, Pay per call, POST /verify/email/basic](https://datacircle.dev/validate-email-apis/contact-verify/pay-as-you-go-pay-per-call-post-verify-email-basic/llms.txt)
- `POST /verify/email/batch`: [Contact Verify, pay as you go, Pay per call, POST /verify/email/batch](https://datacircle.dev/validate-email-apis/contact-verify/pay-as-you-go-pay-per-call-post-verify-email-batch/llms.txt)
- `POST /verify/email`: [Contact Verify, pay as you go, Pay per call, POST /verify/email](https://datacircle.dev/validate-email-apis/contact-verify/pay-as-you-go-pay-per-call-post-verify-email/llms.txt)

## Contact Verify's APIs (2)

- [Contact Verify: email verification API pricing, 2 plans](https://datacircle.dev/validate-email-apis/contact-verify/free/llms.txt)
- [Contact Verify: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/contact-verify/pay-as-you-go/llms.txt)

## Contact Verify: email verification API alternatives

- [pingutil, free API key, POST /v1/verify](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt): $0.00 per 1,000, 50% complete, 30 days
- [MailTester Ninja, free, No token](https://datacircle.dev/validate-email-apis/mailtester-ninja/free-no-token/llms.txt): $0.00 per 1,000, 50% complete, live
- [Giggal, free trial, POST /v1/verify-batch](https://datacircle.dev/validate-email-apis/giggal/free-trial-post-v1-verify-batch/llms.txt): $0.00 per 1,000, 67% complete, live
- [Enrich.so, free, POST /email-validation](https://datacircle.dev/validate-email-apis/enrich-so/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [APIVerve, free](https://datacircle.dev/validate-email-apis/apiverve/free/llms.txt): $0.00 per 1,000, 50% complete, 1 day (MX valid, MX record, null MX, can receive mail, has SPF, has DMARC: 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 2026-11-08.

- https://getcontactverify.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://getcontactverify.com/docs/email-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://getcontactverify.com/docs/phone-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://getcontactverify.com/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://getcontactverify.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://getcontactverify.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing