# AgentReader, pay as you go: Email verification API

> Use this to validate an email address before outreach or onboarding: RFC-ish syntax, MX/A via DNS-over-HTTPS, disposable/temp domain heuristics, free-provider and role-account flags, mail-host provider guess, score + verdict. No SMTP probe. Example: {email:"info@stripe.com"}. $0.002.

AgentReader's x402 pay per call plan for the email verification API costs $2.00 per 1,000 emails. We check each provider's docs for 6 fields. AgentReader's docs list 3: Address, Deliverability, Confidence.
We haven't run AgentReader through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
We rank 4,207 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. This plan costs less per 1,000 emails than 48% of the 4,207 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/agentreader/pay-as-you-go
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://api.axiomworks.co.uk/buy/email-check?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://api.axiomworks.co.uk/email-check`
- API key: not needed
- Its API docs: https://api.axiomworks.co.uk/buy/email-check?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: AgentReader (https://api.axiomworks.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-09

## In the answer

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

## Price

- $ per 1,000 emails: $2.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Use this to validate an email address before outreach or onboarding: RFC-ish syntax, MX/A via DNS-over-HTTPS, disposable/temp domain heuristics, free-provider and role-account flags, mail-host provider guess, score + verdict. No SMTP probe. Example: {email:"info@stripe.com"}. $0.002.

## Data

- What it checks: format, 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: email
- Method: GET
- Path: /email-check

## 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 (x402)

## The 7 fields the plan's answer can hold

email address, syntax valid, status, score, flags, mail provider, MX record

## AgentReader's plans (1)

- [AgentReader, pay as you go](https://datacircle.dev/validate-email-apis/agentreader/pay-as-you-go/llms.txt): $2.00 per 1,000, 50% complete

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

- `GET /email-check`: [AgentReader, pay as you go](https://datacircle.dev/validate-email-apis/agentreader/pay-as-you-go/llms.txt)

## AgentReader's APIs (6)

- [AgentReader: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/agentreader/pay-as-you-go/llms.txt)
- [AgentReader: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/agentreader/pay-as-you-go/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /kyb](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-kyb/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /be-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-be-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /cz-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-cz-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /dk-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-dk-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /ee-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-ee-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /fi-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-fi-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /fr-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-fr-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /ie-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-ie-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /lv-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-lv-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /no-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-no-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /sg-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-sg-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /sk-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-sk-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /ch-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-ch-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /uk-company](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-uk-company/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /uk-company-lite](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-uk-company-lite/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /uk-dd](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-uk-dd/llms.txt)
- [AgentReader: business verification API pricing, 1 plan, GET /us-entity](https://datacircle.dev/business-verification-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-us-entity/llms.txt)
- [AgentReader: company enrichment API pricing, 1 plan, GET /au-company](https://datacircle.dev/company-enrichment-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-au-company/llms.txt)
- [AgentReader: company enrichment API pricing, 1 plan, GET /ca-company](https://datacircle.dev/company-enrichment-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-ca-company/llms.txt)
- [AgentReader: company enrichment API pricing, 1 plan, GET /company](https://datacircle.dev/company-enrichment-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-company/llms.txt)
- [AgentReader: company enrichment API pricing, 1 plan, GET /company-full](https://datacircle.dev/company-enrichment-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-company-full/llms.txt)
- [AgentReader: company enrichment API pricing, 1 plan, GET /pl-company](https://datacircle.dev/company-enrichment-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-pl-company/llms.txt)
- [AgentReader: company enrichment API pricing, 1 plan, GET /registry-batch](https://datacircle.dev/company-enrichment-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-registry-batch/llms.txt)
- [AgentReader: tech stack API pricing, 1 plan, GET /company](https://datacircle.dev/company-technology-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-company/llms.txt)
- [AgentReader: tech stack API pricing, 1 plan, GET /company-full](https://datacircle.dev/company-technology-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-company-full/llms.txt)
- [AgentReader: web scraping API pricing, 1 plan, GET /read](https://datacircle.dev/web-scraping-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-read/llms.txt)
- [AgentReader: web scraping API pricing, 1 plan, GET /read-batch](https://datacircle.dev/web-scraping-apis/agentreader/pay-as-you-go-x402-pay-per-call-get-read-batch/llms.txt)

## AgentReader: email verification API alternatives

- [MillionPhones, $60 monthly](https://datacircle.dev/validate-email-apis/millionphones/60-monthly/llms.txt): $2.00 per 1,000, 33% complete, live
- [Verifly, $10 pack, Starter, POST /verify/bulk](https://datacircle.dev/validate-email-apis/verifly/10-pack-starter-post-verify-bulk/llms.txt): $2.00 per 1,000, 33% complete, live
- [Verimail, $20 pack](https://datacircle.dev/validate-email-apis/verimail/20-pack/llms.txt): $2.00 per 1,000, 50% complete, live
- [NullBounce, $10 pack](https://datacircle.dev/validate-email-apis/nullbounce/10-pack/llms.txt): $2.00 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 2026-11-09.

- https://api.axiomworks.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.axiomworks.co.uk/buy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.axiomworks.co.uk/buy/email-check?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.axiomworks.co.uk/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing