# Corenexis, free, Basic, POST /disposable-email-validator/v1: Email verification API

> Detect disposable, temporary, and fake email addresses in real-time. Block spam signups and protect your platform with our fast, accurate, and lightweight API.

Corenexis's email verification API on its Basic plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Company.
We haven't run Corenexis through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 3,753 plans for email verification APIs by price. Half the plans cost $1.98 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.
[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 the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/corenexis/free-basic-post-disposable-email-validator-v1
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://api.corenexis.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.corenexis.com/disposable-email-validator/v1`
- API key: with the plan, on https://api.corenexis.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://api.corenexis.com/disposable-email-validator/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Corenexis (https://corenexis.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-05

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Detect disposable, temporary, and fake email addresses in real-time. Block spam signups and protect your platform with our fast, accurate, and lightweight API.

## Data

- What it checks: disposable domains
- Keep data: no limit
- Use data: Section 7: "In addition to the content restrictions in Section 5, you agree not to: Systematically retrieve data or content from the Services to create or compile a collection, compilation, database, or directory without written permission from us [...] Resell, sublicense, white-label, or redistribute API access without our prior written agreement, Use our Services to build or train a directly competing product [...]", Section 8: "Corenexis does not claim ownership of [...] the output generated for you", Section 11: "Use of the API platform must comply with all applicable laws and regulations and with the Acceptable Use and Content Policy in Section 5"

## Plan

- Pay: $0
- You get: 1,000 requests a month
- Enough for: 1,000 calls a month

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: POST
- Path: /disposable-email-validator/v1

## About the plan

- Plan: Basic
- Who can get it: anyone

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

success, plan, email address, disposable, domain, remaining validations, rate limit, monthly limit

## Corenexis's plans (8)

- [Corenexis, free, Basic, POST /disposable-email-validator/v1](https://datacircle.dev/validate-email-apis/corenexis/free-basic-post-disposable-email-validator-v1/llms.txt): $0.00 per 1,000, 50% complete
- [Corenexis, $0.99 monthly](https://datacircle.dev/validate-email-apis/corenexis/0-99-monthly/llms.txt): $0.099 per 1,000, 50% complete
- [Corenexis, $3.99 monthly](https://datacircle.dev/validate-email-apis/corenexis/3-99-monthly/llms.txt): $0.08 per 1,000, 50% complete
- [Corenexis, $4.99 monthly](https://datacircle.dev/validate-email-apis/corenexis/4-99-monthly/llms.txt): $0.998 per 1,000, 50% complete, live
- [Corenexis, $9.99 monthly](https://datacircle.dev/validate-email-apis/corenexis/9-99-monthly/llms.txt): $0.666 per 1,000, 50% complete, live
- [Corenexis, $19.99 monthly](https://datacircle.dev/validate-email-apis/corenexis/19-99-monthly/llms.txt): $0.08 per 1,000, 50% complete
- [Corenexis, $29.99 monthly](https://datacircle.dev/validate-email-apis/corenexis/29-99-monthly/llms.txt): $0.60 per 1,000, 50% complete, live
- [Corenexis, contact us, Enterprise, POST /disposable-email-validator/v1](https://datacircle.dev/validate-email-apis/corenexis/contact-us-enterprise-post-disposable-email-validator-v1/llms.txt): 50% complete

## Corenexis's calls (2)

- `POST /disposable-email-validator/v1`: [Corenexis, free, Basic, POST /disposable-email-validator/v1](https://datacircle.dev/validate-email-apis/corenexis/free-basic-post-disposable-email-validator-v1/llms.txt)
- `POST /email-validator/v1`: [Corenexis, free, Basic, POST /email-validator/v1](https://datacircle.dev/validate-email-apis/corenexis/free-basic-post-email-validator-v1/llms.txt)

## Corenexis's APIs (1)

- [Corenexis: email verification API pricing, 8 plans, POST /disposable-email-validator/v1](https://datacircle.dev/validate-email-apis/corenexis/free-basic-post-disposable-email-validator-v1/llms.txt)

## Corenexis: email verification API alternatives

- [Syvel, free](https://datacircle.dev/validate-email-apis/syvel/free/llms.txt): $0.00 per 1,000, 50% complete
- [Neutrino API, pay as you go, On-Demand, GET /email-validate](https://datacircle.dev/validate-email-apis/neutrino-api/pay-as-you-go-on-demand-get-email-validate/llms.txt): $0.08 per 1,000, 50% complete, stored
- [Mailsfinder, $191.88 yearly, Growth annual, POST /email/verifyEmail](https://datacircle.dev/validate-email-apis/mailsfinder/191-88-yearly-growth-annual-post-email-verifyemail/llms.txt): $0.08 per 1,000, 50% complete, live
- [CleanTalk, $720 yearly, 750,000 checks a month, 12 months (20% off), GET /, email_check](https://datacircle.dev/validate-email-apis/cleantalk/720-yearly-750000-checks-a-month-12-months-20-off-get-email-check/llms.txt): $0.08 per 1,000, 33% complete
- [GMass, $295 monthly](https://datacircle.dev/validate-email-apis/gmass/295-monthly/llms.txt): $0.082 per 1,000, 33% 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 2026-11-05.

- https://api.corenexis.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.corenexis.com/disposable-email-validator/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.corenexis.com/email-validator/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.corenexis.com/mcp?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://corenexis.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing