# MailValidation.io, free, Free, POST /a/{team_slug}/validate/api/bulk/: Email validation API

> MailValidation.io checks every address in real time — catching typos, disposable domains, and fake signups before they cost you a bounce, a blocklist, or a wasted send.

MailValidation.io's email validation API on its Free plan, $0.00 per 1,000 emails. 1 of the 6 key fields: Address.

- This page: https://datacircle.dev/validate-email-apis/mailvalidation-io/free-free-post-a-team-slug-validate-api-bulk
- Get it: https://mailvalidation.io/#pricing
- Its API docs: https://app.mailvalidation.io/api/schema/swagger-ui/
- Sold by: MailValidation.io (https://mailvalidation.io)
- Checked: 2026-10-19

## In the answer

- Completeness: 17%
- Address: ✓

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Per: result
- Also pays for: from the same budget: Validate an Email (POST /api/validate/) · Widget API endpoint (POST /api/widget/{widget_key}/validate/)

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: MailValidation.io checks every address in real time — catching typos, disposable domains, and fake signups before they cost you a bounce, a blocklist, or a wasted send.

## Data

- Freshness: live
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 results

## Rate limit

- Per second: 0.28

## Speed

- Answer: by polling or webhook

## The call

- You send: emails
- Method: POST
- Path: /a/{team_slug}/validate/api/bulk/

## About the plan

- Plan: Free
- Who can get it: anyone

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

bulk upload ID, filename, emails queued, duplicates skipped, capped by plan limit

## MailValidation.io's plans (5)

- [MailValidation.io, free, Free, POST /a/{team_slug}/validate/api/bulk/](https://datacircle.dev/validate-email-apis/mailvalidation-io/free-free-post-a-team-slug-validate-api-bulk/llms.txt): $0.00 per 1,000, 17% complete, live
- [MailValidation.io, $10 monthly, Lite, POST /a/{team_slug}/validate/api/bulk/](https://datacircle.dev/validate-email-apis/mailvalidation-io/10-monthly-lite-post-a-team-slug-validate-api-bulk/llms.txt): $5.003 per 1,000, 17% complete, live
- [MailValidation.io, $45 monthly, Starter, POST /a/{team_slug}/validate/api/bulk/](https://datacircle.dev/validate-email-apis/mailvalidation-io/45-monthly-starter-post-a-team-slug-validate-api-bulk/llms.txt): $4.500 per 1,000, 17% complete, live
- [MailValidation.io, $80 monthly, Pro, POST /a/{team_slug}/validate/api/bulk/](https://datacircle.dev/validate-email-apis/mailvalidation-io/80-monthly-pro-post-a-team-slug-validate-api-bulk/llms.txt): $4.00 per 1,000, 17% complete, live
- [MailValidation.io, $330 monthly, Business+, POST /a/{team_slug}/validate/api/bulk/](https://datacircle.dev/validate-email-apis/mailvalidation-io/330-monthly-business-post-a-team-slug-validate-api-bulk/llms.txt): $3.30 per 1,000, 17% complete, live

## MailValidation.io's calls (2)

- `POST /api/validate/`: [MailValidation.io, free, Free, POST /api/validate/](https://datacircle.dev/validate-email-apis/mailvalidation-io/free-free-post-api-validate/llms.txt)
- `POST /a/{team_slug}/validate/api/bulk/`: [MailValidation.io, free, Free, POST /a/{team_slug}/validate/api/bulk/](https://datacircle.dev/validate-email-apis/mailvalidation-io/free-free-post-a-team-slug-validate-api-bulk/llms.txt)

## Similar plans of other providers

- [Melissa, free, Monthly Top-off, GET /V4/WEB/GlobalEmail/doGlobalEmail](https://datacircle.dev/validate-email-apis/melissa/free-monthly-top-off-get-v4-web-globalemail-doglobalemail/llms.txt): $0.00 per 1,000, 50% complete, live
- [Minelead, free](https://datacircle.dev/validate-email-apis/minelead/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Neutrino API, free, Free, GET /email-verify](https://datacircle.dev/validate-email-apis/neutrino-api/free-free-get-email-verify/llms.txt): $0.00 per 1,000, 50% complete, live
- [MyEmailVerifier, free, 100 free credits daily, GET /verifier/validate_single/{email}/{API_KEY}](https://datacircle.dev/validate-email-apis/myemailverifier/free-100-free-credits-daily-get-verifier-validate-single-email-api-key/llms.txt): $0.00 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 2026-10-19.

- https://app.mailvalidation.io/accounts/signup/
- https://app.mailvalidation.io/api/schema/
- https://app.mailvalidation.io/api/schema/swagger-ui/
- https://app.mailvalidation.io/docs/
- https://app.mailvalidation.io/terms/
- https://mailvalidation.io/