# AgentsTools, pay as you go: Email verification API

> Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable / free-webmail / role-account flags and a deliverability signal. No SMTP probing of individual mailboxes (privacy + ToS).

AgentsTools's x402 pay per call plan for the email verification API costs $5.00 per 1,000 emails. AgentsTools's docs list 2 of the 6 fields on our checklist: Deliverability, Company.
We haven't run AgentsTools through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
We rank 4,098 plans for email verification APIs by price. Half the plans cost $1.995 or less per 1,000 emails. This plan costs less per 1,000 emails than 22% of the 4,098 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/agentstools/pay-as-you-go
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://api.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://api.agentstools.dev/enrich/email`
- API key: not needed
- Its API docs: https://api.agentstools.dev/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#/paid/enrich_email_enrich_email_get
- Sold by: AgentsTools (https://api.agentstools.dev?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: $5.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable / free-webmail / role-account flags and a deliverability signal. No SMTP probing of individual mailboxes (privacy + ToS).

## Data

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

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: one of email or domain
- Method: GET
- Path: /enrich/email

## About the plan

- Plan: x402 pay per call
- Who can get it: anyone, with no account or API key, paying each call in USDC on Base from a wallet (x402)

## The 13 fields the plan's answer can hold

domain, has MX record, MX records, mail provider, mail providers, SPF present, SPF policy, DMARC present, DMARC policy, disposable, free, role, deliverability signal

## AgentsTools's plans (1)

- [AgentsTools, pay as you go](https://datacircle.dev/validate-email-apis/agentstools/pay-as-you-go/llms.txt): $5.00 per 1,000, 33% complete

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

- `GET /enrich/email`: [AgentsTools, pay as you go](https://datacircle.dev/validate-email-apis/agentstools/pay-as-you-go/llms.txt)

## AgentsTools's APIs (8)

- [AgentsTools: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: web search API pricing, 1 plan](https://datacircle.dev/web-search-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: GitHub repository API pricing, 1 plan](https://datacircle.dev/github-repository-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: news API pricing, 1 plan, GET /crypto/news](https://datacircle.dev/news-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-crypto-news/llms.txt)
- [AgentsTools: news API pricing, 1 plan, GET /gdelt/news](https://datacircle.dev/news-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-gdelt-news/llms.txt)
- [AgentsTools: news API pricing, 1 plan, GET /search/news](https://datacircle.dev/news-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-search-news/llms.txt)
- [AgentsTools: web scraping API pricing, 1 plan, GET /extract](https://datacircle.dev/web-scraping-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-extract/llms.txt)
- [AgentsTools: web scraping API pricing, 1 plan, GET /structured](https://datacircle.dev/web-scraping-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-structured/llms.txt)

## AgentsTools: email verification API alternatives

- [MillionPhones, top-up from $5](https://datacircle.dev/validate-email-apis/millionphones/top-up-from-5/llms.txt): $5.00 per 1,000, 33% complete, live
- [NullBounce, $5 pack](https://datacircle.dev/validate-email-apis/nullbounce/5-pack/llms.txt): $5.00 per 1,000, 33% complete, live
- [Qualisend, $5 monthly, Pro, 1,000 credits a month, POST /verify/bulk](https://datacircle.dev/validate-email-apis/qualisend/5-monthly-pro-1000-credits-a-month-post-verify-bulk/llms.txt): $5.00 per 1,000, 50% complete, live
- [MailProbe, $5 pack](https://datacircle.dev/validate-email-apis/mailprobe/5-pack/llms.txt): $5.00 per 1,000, 50% complete, live
- [Qonoro, pay as you go](https://datacircle.dev/validate-email-apis/qonoro/pay-as-you-go/llms.txt): $5.00 per 1,000, 67% complete

## 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.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.agentstools.dev/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.agentstools.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing