# OneShot, free: Email verification API

> Checks whether an email address is deliverable, using MX records, mailbox existence, and other signals. The job result says whether the address is valid, deliverable, catch-all, or disposable.

OneShot's email verification API on its Starter credit plan. It costs $0.00 per 1,000 emails. It returns 2 of the 6 key fields we check: Address, Deliverability.
The cheapest of the 1,671 priced plans is [treg, top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt), at $0.00 per 1,000.

- This page: https://datacircle.dev/validate-email-apis/oneshot/free
- Get it: https://docs.oneshotagent.com/pricing
- Its API docs: https://docs.oneshotagent.com/api-reference/verify/email
- Sold by: OneShot (https://oneshotagent.com)
- Checked: 2026-10-22

## In the answer

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

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Also pays for: from the same budget: every paid call

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Checks whether an email address is deliverable, using MX records, mailbox existence, and other signals. The job result says whether the address is valid, deliverable, catch-all, or disposable.

## Data

- Freshness: live
- Keep data: no limit
- Use data: only as necessary or implicit in the proper use of the Service, under its terms and applicable law, no selling, sublicensing or transferring its content to third parties, no reselling any portion of the Service without Freebutter AI's written permission

## Plan

- Pay: $0
- You get: $1
- Enough for: 1,000 calls, once

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: by polling

## The call

- You send: email
- Method: POST
- Path: /v1/tools/lookup/person-email-status

## About the plan

- Plan: Starter credit
- Who can get it: anyone, consumer or business, not in a country under a U.S. government embargo or on a U.S. restricted-party list, with a new personal workspace (its console claims the credit)

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

email, valid, deliverable, catch-all, disposable, request ID, task status

## OneShot's plans (4)

- [OneShot, free](https://datacircle.dev/validate-email-apis/oneshot/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [OneShot, pay as you go](https://datacircle.dev/validate-email-apis/oneshot/pay-as-you-go/llms.txt): $1.00 per 1,000, 33% complete, live
- [OneShot, top-up from $0.01, Card via Stripe Checkout](https://datacircle.dev/validate-email-apis/oneshot/top-up-from-0-01-card-via-stripe-checkout/llms.txt): $1.00 per 1,000, 33% complete, live
- [OneShot, top-up from $0.01, Top-up (x402, USDC on Base)](https://datacircle.dev/validate-email-apis/oneshot/top-up-from-0-01-top-up-x402-usdc-on-base/llms.txt): $1.00 per 1,000, 33% complete, live

## OneShot's calls (1)

- `POST /v1/tools/lookup/person-email-status`: [OneShot, free](https://datacircle.dev/validate-email-apis/oneshot/free/llms.txt)

## OneShot's APIs (9)

- [OneShot: LinkedIn person post API pricing, 4 plans](https://datacircle.dev/linkedin-person-post-apis/oneshot/free/llms.txt)
- [OneShot: LinkedIn profile API pricing, 4 plans](https://datacircle.dev/linkedin-profile-apis/oneshot/free/llms.txt)
- [OneShot: company discovery API pricing, 4 plans](https://datacircle.dev/company-discovery-apis/oneshot/free/llms.txt)
- [OneShot: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/oneshot/free/llms.txt)
- [OneShot: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/oneshot/free/llms.txt)
- [OneShot: email finder API pricing, 4 plans](https://datacircle.dev/find-email-apis/oneshot/free/llms.txt)
- [OneShot: phone finder API pricing, 4 plans](https://datacircle.dev/find-phone-apis/oneshot/free/llms.txt)
- [OneShot: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/oneshot/free/llms.txt)
- [OneShot: person enrichment API pricing, 4 plans, POST /v1/tools/lookup/person-dossier](https://datacircle.dev/person-enrichment-apis/oneshot/free/llms.txt)
- [OneShot: person enrichment API pricing, 4 plans, POST /v1/tools/lookup/person-social-accounts](https://datacircle.dev/person-enrichment-apis/oneshot/free-starter-credit-post-v1-tools-lookup-person-social-accounts/llms.txt)

## OneShot: email verification API alternatives

- [Enrich.so, free, Free, POST /email-validation](https://datacircle.dev/validate-email-apis/enrich-so/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [GetProspect, free, Free, POST /v2/email-verifications](https://datacircle.dev/validate-email-apis/getprospect/free-free-post-v2-email-verifications/llms.txt): $0.00 per 1,000, 50% complete, live
- [KaijuVerifier, free, Free, POST /api/v1/jobs](https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-jobs/llms.txt): $0.00 per 1,000, 50% complete, live
- [Neutrino API, free, Free, GET /email-verify](https://datacircle.dev/validate-email-apis/neutrino-api/free-free-get-email-verify/llms.txt): $0.00 per 1,000, 50% 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 2026-10-22.

- https://docs.oneshotagent.com/agent-billing-infra
- https://docs.oneshotagent.com/api-reference/credits/top-up
- https://docs.oneshotagent.com/api-reference/enrich/email
- https://docs.oneshotagent.com/api-reference/enrich/profile.md
- https://docs.oneshotagent.com/api-reference/verify/email.md
- https://docs.oneshotagent.com/pricing
- https://docs.oneshotagent.com/pricing.md
- https://docs.oneshotagent.com/rate-limits.md
- https://oneshotagent.com/terms
- https://win.oneshotagent.com/docs
- https://win.oneshotagent.com/openapi.json