# APILayer, free: Email validation API

> Simple REST API measuring email deliverability & quality. Verify email addresses as they come into your system and make sure you only send email to real customers and high-value contacts

APILayer's email validation API on its Free Plan plan, $0.00 per 1,000 emails. 4 of the 6 key fields: Address, Its check, Confidence, Company.

- This page: https://datacircle.dev/validate-email-apis/apilayer/free
- Get it: https://mailboxlayer.com/pricing
- Its API docs: https://docs.apilayer.com/mailboxlayer/docs/mailboxlayer-api-v-1-0-0#default/checkEmail
- Sold by: APILayer (https://apilayer.com)
- Checked: 2026-10-19

## In the answer

- Completeness: 67%
- Address: ✓
- Its check: ✓
- Confidence: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: never
- Per: call
- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Simple REST API measuring email deliverability & quality. Verify email addresses as they come into your system and make sure you only send email to real customers and high-value contacts

## Data

- Freshness: live
- Keep data: You shall not: [...] use, store, or access any numverify API Data & Services, or the numverify API after the termination of this Agreement, You do not permit Your end users to store [...] numverify API Data & Services for any other purposes
- Use data: You are hereby permitted to receive, process, and display numverify API Data & Services to individual end-users of your application(s), provided such end users use numverify API Data & Services strictly for their own personal use, You do not permit Your end users to store, distribute, or otherwise exploit numverify API Data & Services for any other purposes. [...] You are permitted solely to use numverify API Data & Services for reference by Your end users. Except as expressly provided herein, under no circumstances whatsoever may You transfer or permit the transfer of numverify API Data & Services outside of your application(s). [...] You shall not: reproduce, copy, modify, distribute, market, display, transfer, sublicense, assign, prepare derivative work(s) or adaptation(s) based on, sell, exchange, barter or transfer, rent, lease, loan, time-share, resell, or in any other manner exploit numverify API Data & Services or the numverify API, make access to numverify API Data & Services or the numverify API available to unauthorized parties, or otherwise post or distribute numverify API Data & Services in any public forum including, but not limited to, print, newsletters, radio, television, or internet, [...] use or permit others to use, market, distribute, or export numverify API Data & Services, or the numverify API, or, use numverify API Data & Services or the numverify API in any manner or for any purpose that violates any law, regulation or right of any person. [...] You also agree not to: [...] redistribute any Information And Content in any manner whatsoever [...] to any person, organization, corporation or other entity, including within your own organization or externally, except for the limited Permitted Uses, [...] present, archive, cache, frame, scrape, or mirror any Information And Content from any part of the Services within another web site, except with express written permission [...], [...] embed or import any data provided in, on or through the Services into any information services (whether or not web-based), data files, or application software, including without limitation accounting and payroll systems, except as specifically permitted in writing by apilayer.

## Plan

- Pay: $0
- You get: 100 requests a month
- Enough for: 100 calls a month
- Expires: not carried over from one monthly period to the next

## Rate limit

- Per second: 0.83
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: smtp, catch_all
- Method: GET
- Path: /check

## About the plan

- Plan: Free Plan
- Who can get it: anyone, for non-commercial use only

## The 11 fields the plan's answer can hold

email, did you mean, local part, domain, syntax valid, MX found, SMTP check passed, role address, disposable, free email, score

## APILayer's plans (8)

- [APILayer, free](https://datacircle.dev/validate-email-apis/apilayer/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [APILayer, $14.99 monthly](https://datacircle.dev/validate-email-apis/apilayer/14-99-monthly/llms.txt): $2.998 per 1,000, 67% complete, live
- [APILayer, $74.99 monthly, Professional Plus Plan, GET /check](https://datacircle.dev/validate-email-apis/apilayer/74-99-monthly-professional-plus-plan-get-check/llms.txt): $1.50 per 1,000, 67% complete, live
- [APILayer, $249.99 monthly, Enterprise Plus Plan, GET /check](https://datacircle.dev/validate-email-apis/apilayer/249-99-monthly-enterprise-plus-plan-get-check/llms.txt): $1.00 per 1,000, 67% complete, live
- [APILayer, $161.99 yearly](https://datacircle.dev/validate-email-apis/apilayer/161-99-yearly/llms.txt): $2.70 per 1,000, 67% complete, live
- [APILayer, $787.99 yearly, Professional Plus Plan, GET /check](https://datacircle.dev/validate-email-apis/apilayer/787-99-yearly-professional-plus-plan-get-check/llms.txt): $1.313 per 1,000, 67% complete, live
- [APILayer, $2,549.99 yearly, Enterprise Plus Plan, GET /check](https://datacircle.dev/validate-email-apis/apilayer/2549-99-yearly-enterprise-plus-plan-get-check/llms.txt): $0.85 per 1,000, 67% complete, live
- [APILayer, contact us](https://datacircle.dev/validate-email-apis/apilayer/contact-us/llms.txt): 67% complete, live

## APILayer's calls (2)

- `GET /check`: [APILayer, free](https://datacircle.dev/validate-email-apis/apilayer/free/llms.txt)
- `GET /bulk_check`: [APILayer, $74.99 monthly, Professional Plus Plan, GET /bulk_check](https://datacircle.dev/validate-email-apis/apilayer/74-99-monthly-professional-plus-plan-get-bulk-check/llms.txt)

## Similar plans of other providers

- [Bounceless, free, 100 credits once, POST /v1/requests, Create a batch (emails)](https://datacircle.dev/validate-email-apis/bounceless/free-100-credits-once-post-v1-requests-100-credits/llms.txt): $0.00 per 1,000, 67% complete, live
- [Bouncer, free, 100 free credits, POST /v1.1/email/verify/batch](https://datacircle.dev/validate-email-apis/bouncer/free-100-free-credits-post-v1-1-email-verify-batch/llms.txt): $0.00 per 1,000, 67% complete, live
- [Bouncify, free](https://datacircle.dev/validate-email-apis/bouncify/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [BetterEnrich, free, 100 credits free, POST /api/v1/verify-catch-all-email](https://datacircle.dev/validate-email-apis/betterenrich/free-100-credits-free-post-api-v1-verify-catch-all-email/llms.txt): $0.00 per 1,000, 17% 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://api.swaggerhub.com/apis/apilayer-863/MailboxlayerAPI/1.0.0/swagger.json
- https://docs.apilayer.com/mailboxlayer/docs/api-documentation
- https://docs.apilayer.com/mailboxlayer/docs/getting-started
- https://docs.apilayer.com/mailboxlayer/docs/mailboxlayer-api-v-1-0-0
- https://docs.apilayer.com/numverify/docs/getting-started
- https://mailboxlayer.com/
- https://mailboxlayer.com/billing-overages-documentation
- https://mailboxlayer.com/pricing
- https://mailboxlayer.com/service-agreement
- https://mailboxlayer.com/terms
- https://numverify.com
- https://numverify.com/faq
- https://numverify.com/permitted-prohibited-use
- https://numverify.com/pricing
- https://numverify.com/service-agreement
- https://numverify.com/terms