# YepAPI, free: Email verification API

> Verify deliverability with SMTP, MX, disposable and accept-all checks + score

YepAPI's email verification API on its Free credit plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Confidence.
We rank 2,475 plans by price. [treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) costs the least per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $26.95 per 1,000 emails when no provider answers.
[Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/149-monthly/llms.txt), [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) and [treg](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/yepapi/free
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://docs.yepapi.com/getting-started/billing
- Request: `POST https://api.yepapi.com/v1/email/verify`
- API key: with the plan, on https://docs.yepapi.com/getting-started/billing
- Its API docs: https://docs.yepapi.com/email-api/verify
- Sold by: YepAPI (https://www.yepapi.com)
- Checked: 2026-10-28

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 154 other calls

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Verify deliverability with SMTP, MX, disposable and accept-all checks + score

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, mailbox
- Keep data: no limit
- Use data: You agree not to use YepAPI to: Violate any applicable law or regulation, Infringe on intellectual property rights of any third party, Transmit malicious code, spam, or abusive content, Attempt to reverse-engineer, scrape, or resell our service, Exceed reasonable usage patterns or abuse rate limits

## Plan

- Pay: $0
- You get: $5
- Enough for: 500 calls, once

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: POST
- Path: /v1/email/verify

## About the plan

- Plan: Free credit
- Who can get it: anyone

## The 17 fields the plan's answer can hold

email, status, deliverability, score, valid format, has MX records, SMTP check, SMTP server reachable, catch-all, disposable, webmail, gibberish, greylisted, blocked, MX records, SMTP provider, sources

## YepAPI's plans (2)

- [YepAPI, free](https://datacircle.dev/validate-email-apis/yepapi/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [YepAPI, top-up](https://datacircle.dev/validate-email-apis/yepapi/top-up/llms.txt): $10.00 per 1,000, 50% complete, live

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

- `POST /v1/email/verify`: [YepAPI, free](https://datacircle.dev/validate-email-apis/yepapi/free/llms.txt)

## YepAPI's APIs (12)

- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/bing](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-bing/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/yahoo](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-yahoo/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/youtube](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-youtube/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google-ads](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google-ads/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google-ai-mode](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google-ai-mode/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google-autocomplete](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google-autocomplete/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google-datasets](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google-datasets/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google-finance](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google-finance/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google-images](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google-images/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/search/google](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-search-google/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/serp/google](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-serp-google/llms.txt)
- [YepAPI: SERP API pricing, 2 plans, POST /v1/seo/serp](https://datacircle.dev/serp-apis/yepapi/free-credit-post-v1-seo-serp/llms.txt)
- [YepAPI: company discovery API pricing, 2 plans](https://datacircle.dev/company-discovery-apis/yepapi/free/llms.txt)
- [YepAPI: news API pricing, 2 plans](https://datacircle.dev/news-apis/yepapi/free/llms.txt)
- [YepAPI: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/yepapi/free/llms.txt)
- [YepAPI: similar companies API pricing, 2 plans](https://datacircle.dev/similar-company-apis/yepapi/free/llms.txt)
- [YepAPI: email verification API pricing, 2 plans](https://datacircle.dev/validate-email-apis/yepapi/free/llms.txt)
- [YepAPI: phone finder API pricing, 2 plans](https://datacircle.dev/find-phone-apis/yepapi/free/llms.txt)
- [YepAPI: people search API pricing, 2 plans](https://datacircle.dev/people-search-apis/yepapi/free/llms.txt)
- [YepAPI: phone validation API pricing, 2 plans](https://datacircle.dev/validate-phone-apis/yepapi/free/llms.txt)
- [YepAPI: email finder API pricing, 2 plans, POST /v1/email/author-finder](https://datacircle.dev/find-email-apis/yepapi/free-credit-post-v1-email-author-finder/llms.txt)
- [YepAPI: email finder API pricing, 2 plans, POST /v1/email/finder](https://datacircle.dev/find-email-apis/yepapi/free-credit-post-v1-email-finder/llms.txt)
- [YepAPI: email finder API pricing, 2 plans, POST /v1/email/linkedin-finder](https://datacircle.dev/find-email-apis/yepapi/free-credit-post-v1-email-linkedin-finder/llms.txt)
- [YepAPI: reverse email lookup API pricing, 2 plans, POST /v1/email/combined](https://datacircle.dev/reverse-email-lookup-apis/yepapi/free-credit-post-v1-email-combined/llms.txt)
- [YepAPI: reverse email lookup API pricing, 2 plans, POST /v1/email/enrich](https://datacircle.dev/reverse-email-lookup-apis/yepapi/free-credit-post-v1-email-enrich/llms.txt)
- [YepAPI: reverse email lookup API pricing, 2 plans, POST /v1/email/person](https://datacircle.dev/reverse-email-lookup-apis/yepapi/free-credit-post-v1-email-person/llms.txt)
- [YepAPI: tech stack API pricing, 2 plans, POST /v1/seo/domain/technologies](https://datacircle.dev/company-technology-apis/yepapi/free-credit-post-v1-seo-domain-technologies/llms.txt)
- [YepAPI: tech stack API pricing, 2 plans, POST /v1/email/technology](https://datacircle.dev/company-technology-apis/yepapi/free-credit-post-v1-email-technology/llms.txt)

## YepAPI: email verification API alternatives

- [MailerCheck, top-up from $10, Pay as you go, 1,000 credits, POST /check/single](https://datacircle.dev/validate-email-apis/mailercheck/top-up-from-10-pay-as-you-go-1000-credits-post-check-single/llms.txt): $10.00 per 1,000, 17% complete, live
- [Kickbox, $5 pack, 500 verifications, GET /verify](https://datacircle.dev/validate-email-apis/kickbox/5-pack-500-verifications-get-verify/llms.txt): $10.00 per 1,000, 67% complete, live
- [Amazon SES, pay as you go](https://datacircle.dev/validate-email-apis/amazon-ses/pay-as-you-go/llms.txt): $10.00 per 1,000, 33% complete, live
- [Bytemine, $1,000 monthly, Business, POST /emails/verify/single](https://datacircle.dev/validate-email-apis/bytemine/1000-monthly-business-post-emails-verify-single/llms.txt): $10.00 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 2026-10-28.

- https://docs.yepapi.com/email-api/verify
- https://docs.yepapi.com/getting-started/billing
- https://docs.yepapi.com/llms-full.txt
- https://docs.yepapi.com/llms.txt
- https://www.yepapi.com
- https://www.yepapi.com/terms