# Checkmails, €19 monthly, Starter, POST /api/v1/bulk: Email verification API

> European SMTP verification service. Your data never leaves the European Union. No reselling, no tracking, automatic deletion.

Checkmails's email verification API on its Starter plan. It costs $4.276 per 1,000 emails. It returns 2 of the 6 key fields we check: Address, Deliverability.
€3.80 per 1,000 emails is $4.276 at the European Central Bank's rate of $1.1253 for €1.
We haven't run Checkmails through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
Half of the 3,753 plans we rank by price cost $1.98 per 1,000 emails or less. This plan costs less per 1,000 emails than 26% of the 3,753 plans.
[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/checkmails/19-monthly-starter-post-api-v1-bulk
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://checkmails.eu?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://checkmails.eu/api/v1/bulk`
- API key: with the plan, on https://checkmails.eu?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://checkmails.eu/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Checkmails (https://checkmails.eu?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-05

## In the answer

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

## Price

- $ per 1,000 emails: $4.276
- Per: result
- Billing: monthly
- $ a month: $21.38

## Aggregators

- Aggregators: none

## Charges

- Also pays for: Get the status of a bulk job · from the same budget: Verify a single email synchronously

## Overage

- Units cap: hard
- Add-ons: 500 credits once for €5 ($11.253 per 1,000)

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: European SMTP verification service. Your data never leaves the European Union. No reselling, no tracking, automatic deletion.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, mailbox
- Keep data: no limit
- Use data: Le Client garantit qu'il dispose d'une base légale valide au sens du RGPD pour traiter les adresses qu'il téléverse, qu'il n'a pas obtenu ces adresses par des moyens illicites (notamment scraping non conforme) et qu'il a respecté ses obligations d'information envers les personnes concernées. Sont prohibés le spam, la fraude, le contournement des limites du plan ou des protections techniques, et l'usage du service dans un contexte B2C sans base légale appropriée. [...] Le Client conserve l'intégralité des droits sur les données qu'il téléverse et sur les résultats produits

## Plan

- Pay: €19
- You get: 5,000 credits a month
- Enough for: 5,000 results a month

## Rate limit

- Per second: 0.17
- Batch: 1,000

## Speed

- Answer: by polling or webhook

## The call

- You send: emails
- Method: POST
- Path: /api/v1/bulk

## About the plan

- Plan: Starter
- Who can get it: anyone, for professional (B2B) use

## The 13 fields the plan's answer can hold

job ID, total, processed, done, email, valid, verdict, blocked, reason, MX host, SMTP code, flags, risk score

## Checkmails's plans (4)

- [Checkmails, €19 monthly, Starter, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/checkmails/19-monthly-starter-post-api-v1-bulk/llms.txt): $4.276 per 1,000, 33% complete, live
- [Checkmails, €49 monthly, Pro, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/checkmails/49-monthly-pro-post-api-v1-bulk/llms.txt): $2.757 per 1,000, 33% complete, live
- [Checkmails, €99 monthly, Enterprise, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/checkmails/99-monthly-enterprise-post-api-v1-bulk/llms.txt): $1.114 per 1,000, 33% complete, live
- [Checkmails, contact us, Custom, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/checkmails/contact-us-custom-post-api-v1-bulk/llms.txt): 33% complete, live

## Checkmails's calls (2)

- `POST /api/v1/bulk`: [Checkmails, €19 monthly, Starter, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/checkmails/19-monthly-starter-post-api-v1-bulk/llms.txt)
- `POST /api/v1/verify`: [Checkmails, €19 monthly, Starter, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/checkmails/19-monthly-starter-post-api-v1-verify/llms.txt)

## Checkmails's APIs (1)

- [Checkmails: email verification API pricing, 4 plans, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/checkmails/19-monthly-starter-post-api-v1-bulk/llms.txt)

## Checkmails: email verification API alternatives

- [Enrow, $17 monthly, Start, POST /email/verify/single](https://datacircle.dev/validate-email-apis/enrow/17-monthly/llms.txt): $4.25 per 1,000, 33% complete, live
- [ListCheckup, €19 pack, Starter, GET /v1/verify](https://datacircle.dev/validate-email-apis/listcheckup/19-pack-starter-get-v1-verify/llms.txt): $4.276 per 1,000, 67% complete, live
- [SafetyMails, $30 monthly](https://datacircle.dev/validate-email-apis/safetymails/30-monthly/llms.txt): $4.286 per 1,000, 33% complete, live
- [Enrichley, $3,865.80 yearly](https://datacircle.dev/validate-email-apis/enrichley/3865-80-yearly/llms.txt): $4.295 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://checkmails.eu?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://checkmails.eu/cgv?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://checkmails.eu/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://checkmails.eu/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing