# MailsGuard, free, Free, POST /api/v1/jobs: Email validation API

> Verify any email address in real time or upload millions in bulk. Simple REST API, JSON responses, no SDK required.

MailsGuard's email validation API on its Free plan, $0.00 per 1,000 emails. 2 of the 6 key fields: Address, Its check.

- This page: https://datacircle.dev/validate-email-apis/mailsguard/free-free-post-api-v1-jobs
- Get it: https://www.mailsguard.io/pricing/
- Its API docs: https://www.mailsguard.io/docs/
- Sold by: MailsGuard (https://www.mailsguard.io)
- Checked: 2026-10-20

## In the answer

- Completeness: 33%
- Address: ✓
- Its check: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: 24 hours
- Per: result
- Also pays for: from the same budget: Single Email Verify

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Verify any email address in real time or upload millions in bulk. Simple REST API, JSON responses, no SDK required.

## Data

- Keep data: no limit
- Use data: You may use the Service to verify email addresses you have a legitimate reason to contact. You may not use the Service to build email lists for unsolicited bulk email, to harvest email addresses, or for any illegal purpose.

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 results, once
- Expires: never

## Rate limit

- Per second: 0.17

## Speed

- Answer: by polling or webhook

## The call

- You send: file
- Method: POST
- Path: /api/v1/jobs

## About the plan

- Plan: Free
- Who can get it: anyone

## The 2 fields the plan's answer can hold

email, status

## MailsGuard's plans (8)

- [MailsGuard, free, Free, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/free-free-post-api-v1-jobs/llms.txt): $0.00 per 1,000, 33% complete
- [MailsGuard, $3 pack, 1,000 verifications, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/3-pack-1000-verifications-post-api-v1-jobs/llms.txt): $3.00 per 1,000, 33% complete
- [MailsGuard, $12 pack, 5,000 verifications, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/12-pack-5000-verifications-post-api-v1-jobs/llms.txt): $2.40 per 1,000, 33% complete
- [MailsGuard, $49 pack, 25,000 verifications, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/49-pack-25000-verifications-post-api-v1-jobs/llms.txt): $1.96 per 1,000, 33% complete
- [MailsGuard, $15 monthly, Starter, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/15-monthly-starter-post-api-v1-jobs/llms.txt): $1.50 per 1,000, 33% complete
- [MailsGuard, $49 monthly, Pro, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/49-monthly-pro-post-api-v1-jobs/llms.txt): $0.98 per 1,000, 33% complete
- [MailsGuard, $149 monthly, Business, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/149-monthly-business-post-api-v1-jobs/llms.txt): $0.745 per 1,000, 33% complete
- [MailsGuard, contact us, Volume pricing, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/contact-us-volume-pricing-post-api-v1-jobs/llms.txt): 33% complete

## MailsGuard's calls (2)

- `POST /api/v1/jobs`: [MailsGuard, free, Free, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/mailsguard/free-free-post-api-v1-jobs/llms.txt)
- `POST /api/v1/verify`: [MailsGuard, free, Free, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/mailsguard/free-free-post-api-v1-verify/llms.txt)

## Similar plans of other providers

- [MailSift, free, Free, GET /verify, Verify one email](https://datacircle.dev/validate-email-apis/mailsift/free-free-get-verify-verify-one-email/llms.txt): $0.00 per 1,000, 67% complete, live
- [MailValid, free, Free, POST /api/v1/verify/bulk](https://datacircle.dev/validate-email-apis/mailvalid/free-free-post-api-v1-verify-bulk/llms.txt): $0.00 per 1,000, 67% complete, 30 days
- [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
- [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://www.mailsguard.io/
- https://www.mailsguard.io/docs/
- https://www.mailsguard.io/pricing/
- https://www.mailsguard.io/privacy/
- https://www.mailsguard.io/terms/