# turboSMTP, free, POST /emailvalidation/validateEmail: Email verification API

> TurboSMTP's Email Validation Tool helps you identify invalid and potentially risky addresses in your contact list before launching a campaign.

turboSMTP's email verification API on its Free plan. It costs $0.00 per 1,000 emails. turboSMTP's docs list 5 of the 6 fields on our checklist: Address, Deliverability, Name, Place, Company.
We haven't run turboSMTP through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 3,960 plans for email verification APIs by price. Half the plans cost $1.998 per 1,000 emails or less. [See the best free email verification API plan.](https://datacircle.dev/best-email-verification-api.txt)
[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.
[pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt), [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) and [Giggal](https://datacircle.dev/validate-email-apis/giggal/39-pack-50000-credits-post-v1-verify/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/turbosmtp/free-post-emailvalidation-validateemail
- [Email validation API: 200+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://serversmtp.com/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://pro.api.serversmtp.com/api/v2/emailvalidation/validateEmail`
- API key: with the plan, on https://serversmtp.com/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://serversmtp.com/docs/api-reference/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#validate-one-address
- Sold by: turboSMTP (https://serversmtp.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 83%
- Address: ✓
- Deliverability: ✓
- Name: ✓
- Place: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: Send Transactional Email · from the same budget: Validate a list

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: TurboSMTP's Email Validation Tool helps you identify invalid and potentially risky addresses in your contact list before launching a campaign.

## Data

- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no API terms
- Use data: 3.2 [...] TurboSmtp grants to the Customer, who accepts, an onerous, non-exclusive and non-transferable license to access the TURBO-SMTP Platform to the extent strictly necessary for this purpose. [...] 3.4 The Client is expressly prohibited, unless otherwise agreed in writing, from reselling and/or otherwise assigning for any reason to third parties access to and/or use of the TURBO-SMTP Platform.

## Plan

- Pay: €0
- You get: 100 credits
- Enough for: 100 calls, once

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email, Content-Type header "application/json"
- Method: POST
- Path: /emailvalidation/validateEmail

## About the plan

- Plan: Free
- Who can get it: anyone

## The 19 fields the plan's answer can hold

email, status, sub-status, free, domain, domain age, SMTP provider, MX found, MX record, did you mean, account, first name, last name, gender, country, region, city, zip code, processed at

## turboSMTP's plans (43)

- [turboSMTP, free, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/free-post-emailvalidation-validateemail/llms.txt): $0.00 per 1,000, 83% complete
- [turboSMTP, top-up from €15, Validation credit top-up, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/top-up-from-15-validation-credit-top-up-post-emailvalidation-validateemail/llms.txt): 83% complete
- [turboSMTP, €49 pack, Silver, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/49-pack-silver-post-emailvalidation-validateemail/llms.txt): $551.397 per 1,000, 83% complete
- [turboSMTP, €92 pack, Gold, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/92-pack-gold-post-emailvalidation-validateemail/llms.txt): $1,035.276 per 1,000, 83% complete
- [turboSMTP, €270 pack, Resell, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/270-pack-resell-post-emailvalidation-validateemail/llms.txt): $3,038.31 per 1,000, 83% complete
- [turboSMTP, €450 pack, Titanium, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/450-pack-titanium-post-emailvalidation-validateemail/llms.txt): $5,063.85 per 1,000, 83% complete
- [turboSMTP, €790 pack, Diamond, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/790-pack-diamond-post-emailvalidation-validateemail/llms.txt): $8,889.87 per 1,000, 83% complete
- [turboSMTP, €14.95 monthly, Basic, 15,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/14-95-monthly-basic-15000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $168.232 per 1,000, 83% complete
- [turboSMTP, €19.95 monthly, Basic, 50,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/19-95-monthly-basic-50000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $224.497 per 1,000, 83% complete
- [turboSMTP, €29.95 monthly, Basic, 100,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/29-95-monthly-basic-100000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $337.027 per 1,000, 83% complete
- [turboSMTP, €79.95 monthly, Pro, 15,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/79-95-monthly-pro-15000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $29.989 per 1,000, 83% complete
- [turboSMTP, €79.95 monthly, Pro, 50,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/79-95-monthly-pro-50000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $29.989 per 1,000, 83% complete
- [turboSMTP, €79.95 monthly, Pro, 100,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/79-95-monthly-pro-100000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $29.989 per 1,000, 83% complete
- [turboSMTP, €149.95 monthly, Pro, 200,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/149-95-monthly-pro-200000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $56.246 per 1,000, 83% complete
- [turboSMTP, €199.95 monthly, Pro, 300,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/199-95-monthly-pro-300000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $75.001 per 1,000, 83% complete
- [turboSMTP, €249.95 monthly, Pro, 400,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/249-95-monthly-pro-400000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $93.756 per 1,000, 83% complete
- [turboSMTP, €299.95 monthly, Pro, 500,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/299-95-monthly-pro-500000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $112.511 per 1,000, 83% complete
- [turboSMTP, €349.95 monthly, Pro, 600,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/349-95-monthly-pro-600000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $131.266 per 1,000, 83% complete
- [turboSMTP, €399.95 monthly, Pro, 700,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/399-95-monthly-pro-700000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $150.021 per 1,000, 83% complete
- [turboSMTP, €499.95 monthly, Pro, 1,000,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/499-95-monthly-pro-1000000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $187.531 per 1,000, 83% complete
- [turboSMTP, €599.95 monthly, Pro, 1,400,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/599-95-monthly-pro-1400000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $225.041 per 1,000, 83% complete
- [turboSMTP, €699.95 monthly, Pro, 1,500,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/699-95-monthly-pro-1500000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $262.551 per 1,000, 83% complete
- [turboSMTP, €999.95 monthly, Pro, 1,900,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/999-95-monthly-pro-1900000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $375.081 per 1,000, 83% complete
- [turboSMTP, €1,099.95 monthly, Pro, 2,500,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/1099-95-monthly-pro-2500000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $412.591 per 1,000, 83% complete
- [turboSMTP, €149.50 yearly, Basic, 15,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/149-50-yearly-basic-15000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $1,682.323 per 1,000, 83% complete
- [turboSMTP, €199.50 yearly, Basic, 50,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/199-50-yearly-basic-50000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $2,244.974 per 1,000, 83% complete
- [turboSMTP, €299.50 yearly, Basic, 100,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/299-50-yearly-basic-100000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $3,370.273 per 1,000, 83% complete
- [turboSMTP, €799.50 yearly, Pro, 15,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/799-50-yearly-pro-15000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $24.991 per 1,000, 83% complete
- [turboSMTP, €799.50 yearly, Pro, 50,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/799-50-yearly-pro-50000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $24.991 per 1,000, 83% complete
- [turboSMTP, €799.50 yearly, Pro, 100,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/799-50-yearly-pro-100000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $24.991 per 1,000, 83% complete
- [turboSMTP, €1,499.50 yearly, Pro, 200,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/1499-50-yearly-pro-200000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $46.872 per 1,000, 83% complete
- [turboSMTP, €1,999.50 yearly, Pro, 300,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/1999-50-yearly-pro-300000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $62.501 per 1,000, 83% complete
- [turboSMTP, €2,499.50 yearly, Pro, 400,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/2499-50-yearly-pro-400000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $78.13 per 1,000, 83% complete
- [turboSMTP, €2,999.50 yearly, Pro, 500,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/2999-50-yearly-pro-500000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $93.759 per 1,000, 83% complete
- [turboSMTP, €3,499.50 yearly, Pro, 600,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/3499-50-yearly-pro-600000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $109.388 per 1,000, 83% complete
- [turboSMTP, €3,999.50 yearly, Pro, 700,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/3999-50-yearly-pro-700000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $125.018 per 1,000, 83% complete
- [turboSMTP, €4,999.50 yearly, Pro, 1,000,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/4999-50-yearly-pro-1000000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $156.276 per 1,000, 83% complete
- [turboSMTP, €5,999.50 yearly, Pro, 1,400,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/5999-50-yearly-pro-1400000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $187.534 per 1,000, 83% complete
- [turboSMTP, €6,999.50 yearly, Pro, 1,500,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/6999-50-yearly-pro-1500000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $218.793 per 1,000, 83% complete
- [turboSMTP, €9,999.50 yearly, Pro, 1,900,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/9999-50-yearly-pro-1900000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $312.568 per 1,000, 83% complete
- [turboSMTP, €10,999.50 yearly, Pro, 2,500,000 emails a month, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/10999-50-yearly-pro-2500000-emails-a-month-post-emailvalidation-validateemail/llms.txt): $343.826 per 1,000, 83% complete
- [turboSMTP, contact us, Enterprise, pay as you go, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/contact-us-enterprise-pay-as-you-go-post-emailvalidation-validateemail/llms.txt): 83% complete
- [turboSMTP, contact us, Enterprise, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/contact-us-enterprise-post-emailvalidation-validateemail/llms.txt): 83% complete

## turboSMTP's calls (2)

- `POST /emailvalidation/upload`: [turboSMTP, free, POST /emailvalidation/upload](https://datacircle.dev/validate-email-apis/turbosmtp/free-post-emailvalidation-upload/llms.txt)
- `POST /emailvalidation/validateEmail`: [turboSMTP, free, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/free-post-emailvalidation-validateemail/llms.txt)

## turboSMTP's APIs (1)

- [turboSMTP: email verification API pricing, 43 plans, POST /emailvalidation/validateEmail](https://datacircle.dev/validate-email-apis/turbosmtp/free-post-emailvalidation-validateemail/llms.txt)

## turboSMTP: email verification API alternatives

- [Postcoder, £233 monthly](https://datacircle.dev/validate-email-apis/postcoder/233-monthly/llms.txt): $24.856 per 1,000, 33% complete, live
- [ManyPI, $25 monthly](https://datacircle.dev/validate-email-apis/manypi/25-monthly/llms.txt): $25.00 per 1,000, 33% complete
- [Bytemine, $250 monthly, Starter, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/250-monthly-starter-post-fraud-check/llms.txt): $25.00 per 1,000, 50% complete, stored
- [Versium, $250 pack, Credit Packages, GET /emailValidation, Email Validation API](https://datacircle.dev/validate-email-apis/versium/250-pack/llms.txt): $25.00 per 1,000, 33% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://serversmtp.com/docs/account/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://serversmtp.com/docs/account/plans-billing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://serversmtp.com/docs/api-reference/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://serversmtp.com/docs/turbo-smtp.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://serversmtp.com/email-validation-tool/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://serversmtp.com/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://serversmtp.com/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing