# Identibyte, free, POST /checks: Email verification API

> Identibyte helps you classify and find key information about your email addresses so you can spend time on the users that need it and save resources from those that don't.

Identibyte's email verification API on its Free 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 Identibyte through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 3,886 plans for email verification APIs by price. Half the plans cost $1.998 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.
[email-validation.org](https://datacircle.dev/validate-email-apis/email-validation-org/450-pack-1000000-credits-post-v1-validate/llms.txt), [pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/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/identibyte/free-post-checks
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://identibyte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://identibyte.com/checks`
- API key: with the plan, on https://identibyte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://identibyte.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Identibyte (https://identibyte.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: from the same budget: Check

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Identibyte helps you classify and find key information about your email addresses so you can spend time on the users that need it and save resources from those that don't.

## Data

- Freshness: 24 hours
- What it checks: disposable domains
- Keep data: no limit
- Use data: You agree not to do any of the following: [...] Use the site to send spam, chain letters, junk mail, or any other type of unsolicited mass email, [...] Systematically harvest data from the site, or programmatically register accounts on the site. [...] you will comply with all applicable local, state, national and international laws and regulations, including without limitation those related to privacy, data collection, and email creation and delivery.

## Plan

- Pay: $0
- You get: 250 requests a day
- Enough for: 250 calls a day

## Rate limit

- Per day: 250
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: email, domain
- Method: POST
- Path: /checks

## About the plan

- Plan: Free
- Who can get it: anyone thirteen or older with the legal capacity to form a binding contract

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

email address, valid, disposable, free, domain, TLD, created at, account ID

## Identibyte's plans (3)

- [Identibyte, free, POST /checks](https://datacircle.dev/validate-email-apis/identibyte/free-post-checks/llms.txt): $0.00 per 1,000, 50% complete, 24 hours
- [Identibyte, $20 monthly, Pro, POST /checks](https://datacircle.dev/validate-email-apis/identibyte/20-monthly-pro-post-checks/llms.txt): $0.0027 per 1,000, 50% complete, 24 hours
- [Identibyte, contact us, POST /checks](https://datacircle.dev/validate-email-apis/identibyte/contact-us-post-checks/llms.txt): 50% complete, 24 hours

## Identibyte's calls (2)

- `GET /check/{identifier}`: [Identibyte, free, GET /check/{identifier}](https://datacircle.dev/validate-email-apis/identibyte/free-get-check-identifier/llms.txt)
- `POST /checks`: [Identibyte, free, POST /checks](https://datacircle.dev/validate-email-apis/identibyte/free-post-checks/llms.txt)

## Identibyte's APIs (1)

- [Identibyte: email verification API pricing, 3 plans, POST /checks](https://datacircle.dev/validate-email-apis/identibyte/free-post-checks/llms.txt)

## Identibyte: email verification API alternatives

- [treg, top-up from $200](https://datacircle.dev/validate-email-apis/treg/top-up-from-200/llms.txt): $0.00 per 1,000, 33% complete, live
- [Unisender Go, ₽547,200 yearly, By invoice, 12 months prepaid, 36,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/547200-yearly-by-invoice-12-months-prepaid-36000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Validemail.co, €9.90 monthly, 9.90 €/month, GET /api/v1/validate](https://datacircle.dev/validate-email-apis/validemail-co/9-90-monthly-9-90-month-get-api-v1-validate/llms.txt): $0.00043 per 1,000, 67% complete, live
- [StableEnrich, pay as you go, Pay per request with x402 or MPP, POST /api/minerva/validate-emails](https://datacircle.dev/validate-email-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-validate-emails/llms.txt): $0.005 per 1,000, 33% complete, 1 day

## 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://identibyte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://identibyte.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://identibyte.com/privacypolicy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://identibyte.com/termsofservice?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing