# Agent Data Tools, free: Email verification API

> Check email syntax, DNS and MX records, disposable providers, role addresses, free providers and SPF/DMARC presence. Returns likely-deliverable, risky, undeliverable or invalid with reasons. No message is sent and the mail server is not contacted.

Agent Data Tools's Free calls plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields. Agent Data Tools's docs list 3: Address, Deliverability, Company.
We haven't run Agent Data Tools through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 4,337 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. [See the best free email verification API plan.](https://datacircle.dev/best-email-verification-api.txt)
[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), [Validemail.co](https://datacircle.dev/validate-email-apis/validemail-co/9-90-monthly-9-90-month-get-api-v1-validate/llms.txt) and [looot](https://datacircle.dev/validate-email-apis/looot/top-up/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/agent-data-tools/free
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://agent-data-tools.revmesh2074.workers.dev/tools?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://agent-data-tools.revmesh2074.workers.dev/email`
- API key: not needed
- Its API docs: https://agent-data-tools.revmesh2074.workers.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#/paths/~1email
- Sold by: Agent Data Tools (https://agent-data-tools.revmesh2074.workers.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 50%
- Address: ✓
- Deliverability: ✓
- Company: ✓

## Price

- $ per 1,000 emails: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Check email syntax, DNS and MX records, disposable providers, role addresses, free providers and SPF/DMARC presence. Returns likely-deliverable, risky, undeliverable or invalid with reasons. No message is sent and the mail server is not contacted.

## Data

- What it checks: format, mail servers, disposable domains, role addresses
- Keep data: no limit
- Use data: Do not use the service for anything unlawful, to harm others, or to overload it. Keep your API key private, anyone with it can spend its credits.

## Plan

- Pay: $0
- You get: 25 requests
- Enough for: 25 calls

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: address
- Method: GET
- Path: /email

## About the plan

- Plan: Free calls
- Who can get it: anyone, 25 free successful calls per caller with no key or account (trial=1 on a GET request), at most 2,000 free calls a day in total

## The 12 fields the plan's answer can hold

address, valid syntax, domain, domain exists, accepts mail, disposable, role address, free provider, has SPF, has DMARC, verdict, reasons

## Agent Data Tools's plans (6)

- [Agent Data Tools, free](https://datacircle.dev/validate-email-apis/agent-data-tools/free/llms.txt): $0.00 per 1,000, 50% complete
- [Agent Data Tools, pay as you go](https://datacircle.dev/validate-email-apis/agent-data-tools/pay-as-you-go/llms.txt): $10.00 per 1,000, 50% complete
- [Agent Data Tools, $1 pack](https://datacircle.dev/validate-email-apis/agent-data-tools/1-pack/llms.txt): $10.00 per 1,000, 50% complete
- [Agent Data Tools, $5 pack](https://datacircle.dev/validate-email-apis/agent-data-tools/5-pack/llms.txt): $10.00 per 1,000, 50% complete
- [Agent Data Tools, $20 pack](https://datacircle.dev/validate-email-apis/agent-data-tools/20-pack/llms.txt): $9.091 per 1,000, 50% complete
- [Agent Data Tools, $100 pack](https://datacircle.dev/validate-email-apis/agent-data-tools/100-pack/llms.txt): $8.00 per 1,000, 50% complete

## Agent Data Tools's calls for this API (1)

- `GET /email`: [Agent Data Tools, free](https://datacircle.dev/validate-email-apis/agent-data-tools/free/llms.txt)

## Agent Data Tools's APIs (7)

- [Agent Data Tools: tech stack API pricing, 6 plans](https://datacircle.dev/company-technology-apis/agent-data-tools/free/llms.txt)
- [Agent Data Tools: domain WHOIS API pricing, 6 plans](https://datacircle.dev/domain-whois-apis/agent-data-tools/free/llms.txt)
- [Agent Data Tools: email verification API pricing, 6 plans](https://datacircle.dev/validate-email-apis/agent-data-tools/free/llms.txt)
- [Agent Data Tools: company enrichment API pricing, 6 plans, GET /company/lookup](https://datacircle.dev/company-enrichment-apis/agent-data-tools/free-calls-get-company-lookup/llms.txt)
- [Agent Data Tools: company enrichment API pricing, 6 plans, GET /pack/domain-intel](https://datacircle.dev/company-enrichment-apis/agent-data-tools/free-calls-get-pack-domain-intel/llms.txt)
- [Agent Data Tools: web scraping API pricing, 6 plans, GET /extract](https://datacircle.dev/web-scraping-apis/agent-data-tools/free-calls-get-extract/llms.txt)
- [Agent Data Tools: web scraping API pricing, 6 plans, GET /contents](https://datacircle.dev/web-scraping-apis/agent-data-tools/free-calls-get-contents/llms.txt)
- [Agent Data Tools: web scraping API pricing, 6 plans, GET /scrape](https://datacircle.dev/web-scraping-apis/agent-data-tools/free-calls-get-scrape/llms.txt)
- [Agent Data Tools: IP company lookup API pricing, 6 plans, GET /pack/ip-intelligence](https://datacircle.dev/ip-company-lookup-apis/agent-data-tools/free-calls-get-pack-ip-intelligence/llms.txt)
- [Agent Data Tools: IP company lookup API pricing, 6 plans, GET /ip/lookup](https://datacircle.dev/ip-company-lookup-apis/agent-data-tools/free-calls-get-ip-lookup/llms.txt)
- [Agent Data Tools: business verification API pricing, 6 plans, GET /lei/lookup](https://datacircle.dev/business-verification-apis/agent-data-tools/free-calls-get-lei-lookup/llms.txt)
- [Agent Data Tools: business verification API pricing, 6 plans, GET /vat/validate](https://datacircle.dev/business-verification-apis/agent-data-tools/free-calls-get-vat-validate/llms.txt)

## Agent Data Tools: email verification API alternatives

- [Easy Email Verification, $4 pack, Pay-as-you-go, 500 emails, POST /bulk/upload](https://datacircle.dev/validate-email-apis/easy-email-verification/4-pack-pay-as-you-go-500-emails-post-bulk-upload/llms.txt): $8.00 per 1,000, 50% complete, live
- [QuickEmailVerification, $4 pack, Persistent Credits, 500 credits, GET /v1/verify](https://datacircle.dev/validate-email-apis/quickemailverification/4-pack/llms.txt): $8.00 per 1,000, 50% complete, live
- [BounceShift, $8 pack, 1,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/8-pack-1000-credits-post-validate-single/llms.txt): $8.00 per 1,000, 50% complete, 24 hours
- [Bouncer, $8 pack, Pay as you go, 1,000 credits, POST /v1.1/email/verify/batch](https://datacircle.dev/validate-email-apis/bouncer/8-pack-pay-as-you-go-1000-credits-post-v1-1-email-verify-batch/llms.txt): $8.00 per 1,000, 67% 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 2026-11-09.

- https://agent-data-tools.revmesh2074.workers.dev/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agent-data-tools.revmesh2074.workers.dev/guides/email-verification-api.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agent-data-tools.revmesh2074.workers.dev/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agent-data-tools.revmesh2074.workers.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agent-data-tools.revmesh2074.workers.dev/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agent-data-tools.revmesh2074.workers.dev/tools?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing