# proxycheck.io, free: Email verification API

> In the below example we've placed an email address instead of an IP address. This will engage our disposable email checking as opposed to our IP checking.

proxycheck.io's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 2 of the 6 key fields we check: Address, Deliverability.
We rank 3,215 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/proxycheck-io/free
- [Best email verification API in 2026: providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://proxycheck.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://proxycheck.io/v3/`
- API key: with the plan, on https://proxycheck.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://proxycheck.io/api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#querying-the-api
- Sold by: proxycheck.io (https://proxycheck.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: In the below example we've placed an email address instead of an IP address. This will engage our disposable email checking as opposed to our IP checking.

## Data

- Freshness: stored
- What it checks: disposable domains
- Keep data: no limit
- Use data: You may use our data to enrich, enhance or support information that you present within your own service to your users. However, you may not make our entire data available verbatim, resell it, or operate a service whose primary purpose or value is providing access to our data.

## Plan

- Pay: $0
- You get: 1,000 results a day
- Enough for: 1,000 results a day

## Rate limit

- Batch: 1,000

## Speed

- Answer: in the call

## The call

- You send: ips. Optional: tag, days, node, short, ver
- Method: POST
- Path: /v3/

## About the plan

- Plan: Free
- Who can get it: anyone with a non-disposable email address, one free account each

## The 5 fields the plan's answer can hold

request status, message, server node, email address, disposable

## proxycheck.io's plans (25)

- [proxycheck.io, free](https://datacircle.dev/validate-email-apis/proxycheck-io/free/llms.txt): $0.00 per 1,000, 33% complete, stored
- [proxycheck.io, $4.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/4-99-monthly/llms.txt): $0.017 per 1,000, 33% complete, stored
- [proxycheck.io, $6.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/6-99-monthly/llms.txt): $0.012 per 1,000, 33% complete, stored
- [proxycheck.io, $9.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/9-99-monthly/llms.txt): $0.0083 per 1,000, 33% complete, stored
- [proxycheck.io, $14.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/14-99-monthly/llms.txt): $0.0062 per 1,000, 33% complete, stored
- [proxycheck.io, $19.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/19-99-monthly/llms.txt): $0.0042 per 1,000, 33% complete, stored
- [proxycheck.io, $29.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/29-99-monthly/llms.txt): $0.0031 per 1,000, 33% complete, stored
- [proxycheck.io, $49.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/49-99-monthly/llms.txt): $0.0026 per 1,000, 33% complete, stored
- [proxycheck.io, $69.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/69-99-monthly/llms.txt): $0.0018 per 1,000, 33% complete, stored
- [proxycheck.io, $99.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/99-99-monthly/llms.txt): $0.0013 per 1,000, 33% complete, stored
- [proxycheck.io, $199.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/199-99-monthly/llms.txt): $0.0013 per 1,000, 33% complete, stored
- [proxycheck.io, $299.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/299-99-monthly/llms.txt): $0.0013 per 1,000, 33% complete, stored
- [proxycheck.io, $399.99 monthly](https://datacircle.dev/validate-email-apis/proxycheck-io/399-99-monthly/llms.txt): $0.0013 per 1,000, 33% complete, stored
- [proxycheck.io, $54.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/54-89-yearly/llms.txt): $0.015 per 1,000, 33% complete, stored
- [proxycheck.io, $76.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/76-89-yearly/llms.txt): $0.011 per 1,000, 33% complete, stored
- [proxycheck.io, $109.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/109-89-yearly/llms.txt): $0.0075 per 1,000, 33% complete, stored
- [proxycheck.io, $164.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/164-89-yearly/llms.txt): $0.0056 per 1,000, 33% complete, stored
- [proxycheck.io, $219.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/219-89-yearly/llms.txt): $0.0038 per 1,000, 33% complete, stored
- [proxycheck.io, $329.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/329-89-yearly/llms.txt): $0.0028 per 1,000, 33% complete, stored
- [proxycheck.io, $549.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/549-89-yearly/llms.txt): $0.0024 per 1,000, 33% complete, stored
- [proxycheck.io, $769.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/769-89-yearly/llms.txt): $0.0016 per 1,000, 33% complete, stored
- [proxycheck.io, $1,099.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/1099-89-yearly/llms.txt): $0.0012 per 1,000, 33% complete, stored
- [proxycheck.io, $2,199.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/2199-89-yearly/llms.txt): $0.0012 per 1,000, 33% complete, stored
- [proxycheck.io, $3,299.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/3299-89-yearly/llms.txt): $0.0012 per 1,000, 33% complete, stored
- [proxycheck.io, $4,399.89 yearly](https://datacircle.dev/validate-email-apis/proxycheck-io/4399-89-yearly/llms.txt): $0.0012 per 1,000, 33% complete, stored

## proxycheck.io's calls (1)

- `POST /v3/`: [proxycheck.io, free](https://datacircle.dev/validate-email-apis/proxycheck-io/free/llms.txt)

## proxycheck.io's APIs (1)

- [proxycheck.io: email verification API pricing, 25 plans](https://datacircle.dev/validate-email-apis/proxycheck-io/free/llms.txt)

## proxycheck.io: email verification API alternatives

- [Disify, $19 monthly, Pro, GET /email/{email}](https://datacircle.dev/validate-email-apis/disify/19-monthly-pro-get-email-email/llms.txt): $0.00088 per 1,000, 50% complete, stored
- [BillionVerify, $280 monthly, Ultimate, POST /verify/disposable](https://datacircle.dev/validate-email-apis/billionverify/280-monthly-ultimate-post-verify-disposable/llms.txt): $0.0011 per 1,000, 50% complete, stored
- [PayPerQ, pay as you go, Pay per request with L402, POST /api/minerva/validate-emails](https://datacircle.dev/validate-email-apis/payperq/pay-as-you-go-pay-per-request-with-l402-post-api-minerva-validate-emails/llms.txt): $0.0058 per 1,000, 17% complete, stored
- [Botoi, $199 monthly, Business, POST /v1/disposable-email/check](https://datacircle.dev/validate-email-apis/botoi/199-monthly-business-post-v1-disposable-email-check/llms.txt): $0.0066 per 1,000, 50% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

- https://proxycheck.io/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://proxycheck.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://proxycheck.io/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://proxycheck.io/resources/proxycheck-openapi.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://proxycheck.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing