# MailValid, free: Email validation API

> MailValid's email verification API checks syntax, DNS/MX records, and SMTP mailbox existence in a single REST call, returning a result in under 500ms.

MailValid's email validation API on its Free tools plan, $0.00 per 1,000 emails. 3 of the 6 key fields: Address, Its check, Company.
MailValid limits how many calls you get, but doesn't say how many.

- This page: https://datacircle.dev/validate-email-apis/mailvalid/free-tools
- Get it: https://mailvalid.io/pricing
- Its API docs: https://mailvalid.io/llms.txt
- Sold by: MailValid (https://mailvalid.io)
- Checked: 2026-10-20

## In the answer

- Completeness: 50%
- Address: ✓
- Its check: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: MailValid's email verification API checks syntax, DNS/MX records, and SMTP mailbox existence in a single REST call, returning a result in under 500ms.

## Data

- Keep data: no limit
- Use data: You agree NOT to use the Service to: Verify email addresses obtained without consent (spam, scraping, purchased lists), Violate any applicable laws, including anti-spam regulations (CAN-SPAM, GDPR, etc.), Resell, sublicense, or redistribute access to the Service without written permission, Attempt to reverse-engineer, decompile, or extract the Service's underlying technology, Exceed rate limits or attempt to disrupt the Service's infrastructure, Use the Service for any illegal, harmful, or fraudulent purpose

## Plan

- Pay: $0
- Expires: never

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: GET
- Path: /api/tools/email

## About the plan

- Plan: Free tools
- Who can get it: anyone

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

success, email, local part, domain, found, cached, syntax valid, domain exists, has MX, MX records, disposable, role based, free provider, provider, provider name, SMTP checked, deliverable, issues, lookup time

## MailValid's plans (1)

- [MailValid, free](https://datacircle.dev/validate-email-apis/mailvalid/free-tools/llms.txt): $0.00 per 1,000, 50% complete

## MailValid's calls (1)

- `GET /api/tools/email`: [MailValid, free](https://datacircle.dev/validate-email-apis/mailvalid/free-tools/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, 67% complete, live
- [MailVeri, free, 1,000 free credits, POST /verify-mail/](https://datacircle.dev/validate-email-apis/mailveri/free-1000-free-credits-post-verify-mail/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
- [MailValidation.io, free, Free, POST /api/validate/](https://datacircle.dev/validate-email-apis/mailvalidation-io/free-free-post-api-validate/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 2026-10-20.

- https://mailvalid.io/api/tools/email?email=test@example.com
- https://mailvalid.io/llms.txt
- https://mailvalid.io/pricing
- https://mailvalid.io/privacy
- https://mailvalid.io/terms
- https://mailvalid.io/tools/mx-lookup
- https://mailvalid.io/use-cases/email-verification-api