# agentsvc.io, pay as you go, Pay per call over x402, POST /api/v1/proxy/email-validate: Email verification API

> Validate an email address: RFC 5322 format check, domain MX record lookup, disposable provider detection, and role address detection (e.g. info@, admin@).

agentsvc.io's email verification API on its Pay per call over x402 plan. It costs $3.50 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Company.
We haven't run agentsvc.io through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
Half of the 3,886 plans we rank by price cost $1.998 per 1,000 emails or less. This plan costs less per 1,000 emails than 33% of the 3,886 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.
[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), [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) and [Giggal](https://datacircle.dev/validate-email-apis/giggal/39-pack-50000-credits-post-v1-verify/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-validate
- [Email validation API: 190+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://agentsvc.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://agentsvc.io/api/v1/proxy/email-validate`
- API key: not needed
- Its API docs: https://agentsvc.io/services/email-validate?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: agentsvc.io (https://agentsvc.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-05

## In the answer

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

## Price

- $ per 1,000 emails: $3.50
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Validate an email address: RFC 5322 format check, domain MX record lookup, disposable provider detection, and role address detection (e.g. info@, admin@).

## Data

- What it checks: format, mail servers, disposable domains, role addresses
- Keep data: no limit
- Use data: Third-party data keeps its own license, attributions are named in the responses and in the site footer. You may use results in your own products. You may not resell access to the services themselves as a substitute for agentsvc.io. You must not: use the services for anything unlawful, including fraud, sanctions evasion, or violating other people's rights, send personal data of other people unless you have a legal basis to do so, read, crawl or monitor websites against their operators' rights or terms, or at a rate that harms them, attack, overload or probe our systems or use them to reach internal networks, or work around rate limits and payment, store unlawful content in agent-memory or agent-inbox, or use the inbox for spam.

## 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: email
- Method: POST
- Path: /api/v1/proxy/email-validate

## About the plan

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

## The 9 fields the plan's answer can hold

email, valid, local part, domain, format valid, domain has MX records, disposable, role address, MX records

## agentsvc.io's plans (7)

- [agentsvc.io, pay as you go, Pay per call over x402, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-validate/llms.txt): $3.50 per 1,000, 50% complete
- [agentsvc.io, $0.10 pack, $0.10 credit (x402 top-up), POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/0-10-pack-0-10-credit-x402-top-up-post-api-v1-proxy-email-validate/llms.txt): $3.182 per 1,000, 50% complete
- [agentsvc.io, $1 pack, $1 credit (x402 top-up), POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/1-pack-1-credit-x402-top-up-post-api-v1-proxy-email-validate/llms.txt): $3.182 per 1,000, 50% complete
- [agentsvc.io, $5 pack, $5 credit, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/5-pack-5-credit-post-api-v1-proxy-email-validate/llms.txt): $3.182 per 1,000, 50% complete
- [agentsvc.io, $20 pack, $20 credit, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/20-pack-20-credit-post-api-v1-proxy-email-validate/llms.txt): $3.182 per 1,000, 50% complete
- [agentsvc.io, $50 pack, $50 credit, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/50-pack-50-credit-post-api-v1-proxy-email-validate/llms.txt): $3.182 per 1,000, 50% complete
- [agentsvc.io, $100 pack, $100 credit, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/100-pack-100-credit-post-api-v1-proxy-email-validate/llms.txt): $3.182 per 1,000, 50% complete

## agentsvc.io's calls for this API (2)

- `POST /api/v1/proxy/email-verify`: [agentsvc.io, pay as you go, Pay per call over x402, POST /api/v1/proxy/email-verify](https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-verify/llms.txt)
- `POST /api/v1/proxy/email-validate`: [agentsvc.io, pay as you go, Pay per call over x402, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-validate/llms.txt)

## agentsvc.io's APIs (7)

- [agentsvc.io: email verification API pricing, 7 plans, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-validate/llms.txt)
- [agentsvc.io: news API pricing, 7 plans, POST /api/v1/proxy/crypto-news](https://datacircle.dev/news-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-crypto-news/llms.txt)
- [agentsvc.io: news API pricing, 7 plans, POST /api/v1/proxy/news-search](https://datacircle.dev/news-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-news-search/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/web-scrape](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-web-scrape/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/web-read-batch](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-web-read-batch/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/page-extract](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-page-extract/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/webpage-reader](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-webpage-reader/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/web-scrape-batch](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-web-scrape-batch/llms.txt)
- [agentsvc.io: phone validation API pricing, 7 plans](https://datacircle.dev/validate-phone-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: business verification API pricing, 7 plans](https://datacircle.dev/business-verification-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: tech stack API pricing, 7 plans](https://datacircle.dev/company-technology-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: company enrichment API pricing, 7 plans](https://datacircle.dev/company-enrichment-apis/agentsvc-io/pay-as-you-go/llms.txt)

## agentsvc.io: email verification API alternatives

- [BounceShift, $175 pack, 50,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/175-pack-50000-credits-post-validate-single/llms.txt): $3.50 per 1,000, 50% complete, 24 hours
- [Kawaa, $35 pack, 10,000 credits, POST /v1/verify](https://datacircle.dev/validate-email-apis/kawaa/35-pack-10000-credits-post-v1-verify/llms.txt): $3.50 per 1,000, 67% complete, 24 hours
- [BounceBan, top-up from $175, 50,000 Credits, Pay-As-You-Go, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/bounceban/top-up-from-175-50000-credits-pay-as-you-go-post-v1-verify-bulk/llms.txt): $3.50 per 1,000, 50% complete, live
- [ClearBounce, $17.50 pack, 5,000 credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/clearbounce/17-50-pack-5000-credits-post-bulk-upload/llms.txt): $3.50 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 2026-11-05.

- https://agentsvc.io/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agentsvc.io/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agentsvc.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agentsvc.io/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agentsvc.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agentsvc.io/services/email-validate?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://agentsvc.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing