# IPASIS, free: Email verification API

> The primary endpoint. Pass an email to get a risk score. Add an optional IP address to include IP-based signals (VPN, proxy, Tor, datacenter) in the score.

IPASIS's Hobby plan for the email verification API costs $0.00 per 1,000 emails. IPASIS's docs list 2 of the 6 fields on our checklist: Address, Deliverability.
We ran IPASIS in [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt). We didn't score any IPASIS plan.
This plan is free. We rank 4,039 plans for email verification APIs by price. Half the plans cost $1.999 per 1,000 emails or less. [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.
[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/ipasis/free
- [Email validation API: 200+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://ipasis.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://api.ipasis.com/v1/validate-email`
- API key: with the plan, on https://ipasis.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://ipasis.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: IPASIS (https://ipasis.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-06

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: IP Lookup

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: The primary endpoint. Pass an email to get a risk score. Add an optional IP address to include IP-based signals (VPN, proxy, Tor, datacenter) in the score.

## Data

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

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: ip
- Method: GET
- Path: /v1/validate-email

## About the plan

- Plan: Hobby
- Who can get it: anyone

## The 21 fields the plan's answer can hold

request ID, success, processed at, risk score, risk level, risk recommendation, risk reasons, email address, status, deliverability, type, domain age, valid syntax, disposable, gibberish, newborn domain, catch-all, role account, MX record, SMTP connect, IP lookup

## IPASIS's plans (4)

- [IPASIS, free](https://datacircle.dev/validate-email-apis/ipasis/free/llms.txt): $0.00 per 1,000, 33% complete
- [IPASIS, contact us, Startup](https://datacircle.dev/validate-email-apis/ipasis/contact-us-startup/llms.txt): 33% complete
- [IPASIS, contact us, Business](https://datacircle.dev/validate-email-apis/ipasis/contact-us-business/llms.txt): 33% complete
- [IPASIS, contact us, Scale](https://datacircle.dev/validate-email-apis/ipasis/contact-us-scale/llms.txt): 33% complete

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

- `GET /v1/validate-email`: [IPASIS, free](https://datacircle.dev/validate-email-apis/ipasis/free/llms.txt)

## IPASIS's APIs (2)

- [IPASIS: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/ipasis/free/llms.txt)
- [IPASIS: IP company lookup API pricing, 4 plans](https://datacircle.dev/ip-company-lookup-apis/ipasis/free/llms.txt)

## IPASIS: email verification API alternatives

- [pingutil, free API key, POST /v1/verify](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt): $0.00 per 1,000, 50% complete, 30 days
- [MailTester Ninja, free, No token](https://datacircle.dev/validate-email-apis/mailtester-ninja/free-no-token/llms.txt): $0.00 per 1,000, 50% complete, live
- [Giggal, free trial, POST /v1/verify-batch](https://datacircle.dev/validate-email-apis/giggal/free-trial-post-v1-verify-batch/llms.txt): $0.00 per 1,000, 67% complete, live
- [Enrich.so, free, POST /email-validation](https://datacircle.dev/validate-email-apis/enrich-so/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Exepal, free](https://datacircle.dev/validate-email-apis/exepal/free/llms.txt): $0.00 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 2026-11-06.

- https://ipasis.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/bot-detection?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/fraud-prevention?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/legal/dpa?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/login?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/openapi.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ipasis.com/use-cases/api-abuse-prevention?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing