# Mekler, pay as you go: Email verification API

> Inspect an address’s syntax and published email settings, with clear limits on what your agent can conclude.

Mekler's Pay per call over x402 plan for the email verification API costs $3.00 per 1,000 emails. Mekler's docs list 2 of the 6 fields on our checklist: Deliverability, Company.
We haven't run Mekler through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
We rank 4,108 plans for email verification APIs by price. Half the plans cost $1.998 or less per 1,000 emails. This plan costs less per 1,000 emails than 37% of the 4,108 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. [StableEnrich's pay-as-you-go plan](https://datacircle.dev/validate-email-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-validate-emails/llms.txt) costs the least for 10,000 emails a month: $0.05.
[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.
[pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt), [looot](https://datacircle.dev/validate-email-apis/looot/top-up/llms.txt) and [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/mekler/pay-as-you-go
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://mekler.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.mekler.ai/v1/email/domains/check-mail-configuration`
- API key: not needed
- Its API docs: https://mekler.ai/services/email-domain-checks/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#checkMailConfiguration
- Sold by: Mekler (https://mekler.ai?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 33%
- Deliverability: ✓
- Company: ✓

## Price

- $ per 1,000 emails: $3.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Inspect an address’s syntax and published email settings, with clear limits on what your agent can conclude.

## Data

- What it checks: format, mail servers, disposable domains
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: per call
- You get: 1 request
- Enough for: 1 call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: kind "email". Optional: value, selector
- Method: POST
- Path: /v1/email/domains/check-mail-configuration

## About the plan

- Plan: Pay per call over x402
- Who can get it: anyone with a wallet holding USDC on Base or Solana

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

service, schema version, domain, syntax, mail route, MX record, SPF record, DMARC record, DKIM, disposable, mailbox exists

## Mekler's plans (1)

- [Mekler, pay as you go](https://datacircle.dev/validate-email-apis/mekler/pay-as-you-go/llms.txt): $3.00 per 1,000, 33% complete

## Mekler's calls for this API (1)

- `POST /v1/email/domains/check-mail-configuration`: [Mekler, pay as you go](https://datacircle.dev/validate-email-apis/mekler/pay-as-you-go/llms.txt)

## Mekler's APIs (3)

- [Mekler: web scraping API pricing, 2 plans](https://datacircle.dev/web-scraping-apis/mekler/free/llms.txt)
- [Mekler: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/mekler/pay-as-you-go/llms.txt)
- [Mekler: news API pricing, 1 plan](https://datacircle.dev/news-apis/mekler/pay-as-you-go/llms.txt)

## Mekler: email verification API alternatives

- [Prime Verifier, $15 pack, Pay-As-You-Go 5,000 credits, POST /v1/verify/single](https://datacircle.dev/validate-email-apis/prime-verifier/15-pack-pay-as-you-go-5000-credits-post-v1-verify-single/llms.txt): $3.00 per 1,000, 50% complete
- [DeBounce, top-up from $15, 5K credits, GET /v1/, Single email validation](https://datacircle.dev/validate-email-apis/debounce/top-up-from-15-5k-credits-get-v1/llms.txt): $3.00 per 1,000, 50% complete, live
- [OrbiSearch, $30 pack, Starter, POST /v1/bulk](https://datacircle.dev/validate-email-apis/orbisearch/30-pack-starter-post-v1-bulk/llms.txt): $3.00 per 1,000, 50% complete, live
- [ExactVerify, $15 pack, Pay-As-You-Go from 5,000 emails, GET /v1/single](https://datacircle.dev/validate-email-apis/exactverify/15-pack-pay-as-you-go-from-5000-emails-get-v1-single/llms.txt): $3.00 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 2026-11-08.

- https://api.mekler.ai/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.mekler.ai/catalog.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.mekler.ai/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.mekler.ai/trials/offer?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://mekler.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://mekler.ai/services/email-domain-checks/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing