# appin60, pay as you go: Email verification API

> Email verification / email validation / bounce check before sending: verify one email address: syntax, MX records, mail provider (Google Workspace, Microsoft 365, ...), catch-all detection, role/free/disposable flags and a live SMTP RCPT check. Returns deliverable, undeliverable, catch_all or no_mx.

appin60's Pay per call (x402) plan for the email verification API costs $3.00 per 1,000 emails. appin60's docs list 2 of the 6 fields on our checklist: Address, Deliverability.
We haven't run appin60 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 36% 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/appin60/pay-as-you-go
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://mailferret.appin60.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://mailferret.appin60.com/verify`
- API key: not needed
- Its API docs: https://mailferret.appin60.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: appin60 (https://mailferret.appin60.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 33%
- Address: ✓
- Deliverability: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $3.00

## In their words

- Their pitch: Email verification / email validation / bounce check before sending: verify one email address: syntax, MX records, mail provider (Google Workspace, Microsoft 365, ...), catch-all detection, role/free/disposable flags and a live SMTP RCPT check. Returns deliverable, undeliverable, catch_all or no_mx.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no API terms
- Use data: Use it for legitimate B2B outreach and list hygiene, and follow anti-spam law (CAN-SPAM, GDPR) when you email anyone.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: POST
- Path: /verify

## About the plan

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

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

email, status, deliverable, catch-all, mail provider, role account, free provider, disposable, MX records

## appin60's plans (1)

- [appin60, pay as you go](https://datacircle.dev/validate-email-apis/appin60/pay-as-you-go/llms.txt): $3.00 per 1,000, 33% complete, live

## appin60's calls for this API (1)

- `POST /verify`: [appin60, pay as you go](https://datacircle.dev/validate-email-apis/appin60/pay-as-you-go/llms.txt)

## appin60's APIs (6)

- [appin60: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/appin60/pay-as-you-go/llms.txt)
- [appin60: tech stack API pricing, 1 plan](https://datacircle.dev/company-technology-apis/appin60/pay-as-you-go/llms.txt)
- [appin60: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/appin60/pay-as-you-go/llms.txt)
- [appin60: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/appin60/pay-as-you-go/llms.txt)
- [appin60: email finder API pricing, 1 plan](https://datacircle.dev/find-email-apis/appin60/pay-as-you-go/llms.txt)
- [appin60: web scraping API pricing, 1 plan](https://datacircle.dev/web-scraping-apis/appin60/pay-as-you-go/llms.txt)

## appin60: email verification API alternatives

- [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
- [Bouncer, $750 pack, Pay as you go, 250,000 credits, POST /v1.1/email/verify/batch](https://datacircle.dev/validate-email-apis/bouncer/750-pack-pay-as-you-go-250000-credits-post-v1-1-email-verify-batch/llms.txt): $3.00 per 1,000, 67% complete, live
- [Voila Norbert, pay as you go, Verify pay-as-you-go, up to 500k emails](https://datacircle.dev/validate-email-apis/voila-norbert/pay-as-you-go-verify-pay-as-you-go-up-to-500k-emails/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://mailferret.appin60.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://mailferret.appin60.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://mailferret.appin60.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://mailferret.appin60.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://pitcrew-api.appin60.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://pitcrew-api.appin60.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://pitcrew-api.appin60.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://pitcrew-api.appin60.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing