# Botoi, free, POST /v1/email/validate: Email verification API

> Validates an email address with format checking, MX record verification, disposable domain detection, free provider detection, role-based address detection, and typo suggestions.

Botoi'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 rank 2,467 plans by price. [treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) costs the least per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $26.95 per 1,000 emails when no provider answers.
[Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/149-monthly/llms.txt), [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) and [treg](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/botoi/free-post-v1-email-validate
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://botoi.com/pricing/
- Request: `POST https://api.botoi.com/v1/email/validate`
- API key: with the plan, on https://botoi.com/pricing/
- Its API docs: https://botoi.com/api/lookup/email-validate/
- Sold by: Botoi (https://botoi.com)
- Checked: 2026-10-20

## 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: 150 other calls

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Validates an email address with format checking, MX record verification, disposable domain detection, free provider detection, role-based address detection, and typo suggestions.

## Data

- Freshness: stored (MX found, MX records: live)
- Keep data: no limit
- Use data: By obtaining and using an API key, You agree to: Keep Your API key confidential and not share it with unauthorized parties, Not exceed the rate limits associated with Your plan tier, Not use the API for any unlawful purpose or to transmit harmful content, Not attempt to circumvent authentication, rate limiting, or other security measures, Not resell or redistribute API access without prior written consent from the Company

## Plan

- Pay: $0
- You get: 1,000 requests a day
- Enough for: 1,000 calls a day
- Expires: resets daily at midnight UTC

## Rate limit

- Per day: 1,000
- Per second: 0.17
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: POST
- Path: /v1/email/validate

## About the plan

- Plan: Free
- Who can get it: anyone 18 or older

## The 14 fields the plan's answer can hold

success, email address, valid, format valid, MX found, MX records, disposable, free provider, role address, domain, local part, did you mean, request ID, time taken

## Botoi's plans (4)

- [Botoi, free, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/botoi/free-post-v1-email-validate/llms.txt): $0.00 per 1,000, 50% complete, stored (MX found, MX records: live)
- [Botoi, $9 monthly, Starter, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/botoi/9-monthly-starter-post-v1-email-validate/llms.txt): $0.03 per 1,000, 50% complete, stored (MX found, MX records: live)
- [Botoi, $49 monthly, Pro, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/botoi/49-monthly-pro-post-v1-email-validate/llms.txt): $0.016 per 1,000, 50% complete, stored (MX found, MX records: live)
- [Botoi, $199 monthly, Business, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/botoi/199-monthly-business-post-v1-email-validate/llms.txt): $0.0066 per 1,000, 50% complete, stored (MX found, MX records: live)

## Botoi's calls for this API (3)

- `POST /v1/disposable-email/check`: [Botoi, free, POST /v1/disposable-email/check](https://datacircle.dev/validate-email-apis/botoi/free-post-v1-disposable-email-check/llms.txt)
- `POST /v1/email/validate`: [Botoi, free, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/botoi/free-post-v1-email-validate/llms.txt)
- `POST /v1/email-mx/verify`: [Botoi, free, POST /v1/email-mx/verify](https://datacircle.dev/validate-email-apis/botoi/free-post-v1-email-mx-verify/llms.txt)

## Botoi's APIs (3)

- [Botoi: tech stack API pricing, 4 plans](https://datacircle.dev/company-technology-apis/botoi/free/llms.txt)
- [Botoi: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/botoi/free/llms.txt)
- [Botoi: email verification API pricing, 4 plans, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/botoi/free-post-v1-email-validate/llms.txt)

## Botoi: email verification API alternatives

- [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
- [EnvoAPI, $49 monthly, Launch, GET /v1/emails/disposable](https://datacircle.dev/validate-email-apis/envoapi/49-monthly-launch-get-v1-emails-disposable/llms.txt): $0.019 per 1,000, 33% complete, stored
- [Antideo, $80 monthly](https://datacircle.dev/validate-email-apis/antideo/80-monthly/llms.txt): $0.056 per 1,000, 33% complete, stored
- [IP-API.io, €10 monthly, Small, GET /api/v1/email/{email}](https://datacircle.dev/validate-email-apis/ip-api-io/10-monthly-small-get-api-v1-email-email/llms.txt): $0.113 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 2026-10-20.

- https://api.botoi.com/openapi.json
- https://api.botoi.com/v1/email/validate
- https://botoi.com/
- https://botoi.com/api/lookup/email-validate/
- https://botoi.com/blog/email-validation-api-comparison-2026/
- https://botoi.com/llms.txt
- https://botoi.com/pricing/
- https://botoi.com/terms/