# Vouch, free, POST /v1/batches: Email verification API

> One authenticated GET verifies an email address: syntax, live MX lookup, a real SMTP RCPT TO handshake and catch-all detection, folded into a single verdict with the receipts.

Vouch's Free plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields. Vouch's docs list 3: Address, Deliverability, Confidence.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), the best plan from Vouch scores 43.3 out of 100. Vouch ranks 132nd of 239 providers.
This plan is free. We rank 4,767 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. [728 email verification API plans on our price sheet are free.](https://datacircle.dev/best-email-verification-api.txt) [pingutil's free plan](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt) scores highest of the free plans in our benchmark, at 82.3 out of 100.
[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, and costs less up front than treg's top-up from $10.
[Validemail.co](https://datacircle.dev/validate-email-apis/validemail-co/9-90-monthly-9-90-month-get-api-v1-validate/llms.txt), [pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt) and [looot](https://datacircle.dev/validate-email-apis/looot/top-up/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/vouch/free-post-v1-batches
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://vouch.fast/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- Request: `POST https://vouch.fast/v1/batches`
- API key: with the plan, on https://vouch.fast/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- Its API docs: https://vouch.fast/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#batch
- Sold by: Vouch (https://vouch.fast?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-11

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Verify one email address

## Overage

- Units cap: hard

## Not found

- $ per 1,000 calls that find nothing: $0.00

## Catch-all

- $ per 1,000 emails at catch-all domains: $0.00

## In their words

- Their pitch: One authenticated GET verifies an email address: syntax, live MX lookup, a real SMTP RCPT TO handshake and catch-all detection, folded into a single verdict with the receipts.

## Data

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

## Plan

- Pay: $0
- You get: 250 credits
- Enough for: 250 results, once
- Expires: never

## Rate limit

- Per second: 1
- Batch: 10,000

## Speed

- Answer: by polling

## The call

- You send: file, Content-Type header "multipart/form-data"
- Method: POST
- Path: /v1/batches

## About the plan

- Plan: Free
- Who can get it: anyone

## The 10 fields the plan's answer can hold

email, status, reason, confidence score, disposable, role, free, catch-all, did you mean, MX host

## Vouch's plans (9)

- [Vouch, free, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/free-post-v1-batches/llms.txt): $0.00 per 1,000, 50% complete, live
- [Vouch, €15 pack, 2,500 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/15-pack-2500-credits-post-v1-batches/llms.txt): $6.752 per 1,000, 50% complete, live
- [Vouch, €55 pack, 10,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/55-pack-10000-credits-post-v1-batches/llms.txt): $6.189 per 1,000, 50% complete, live
- [Vouch, €250 pack, 50,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/250-pack-50000-credits-post-v1-batches/llms.txt): $5.627 per 1,000, 50% complete, live
- [Vouch, €450 pack, 100,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/450-pack-100000-credits-post-v1-batches/llms.txt): $5.064 per 1,000, 50% complete, live
- [Vouch, €1,000 pack, 250,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/1000-pack-250000-credits-post-v1-batches/llms.txt): $4.501 per 1,000, 50% complete, live
- [Vouch, €1,750 pack, 500,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/1750-pack-500000-credits-post-v1-batches/llms.txt): $3.939 per 1,000, 50% complete, live
- [Vouch, €3,000 pack, 1,000,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/3000-pack-1000000-credits-post-v1-batches/llms.txt): $3.376 per 1,000, 50% complete, live
- [Vouch, contact us, Custom volume, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/contact-us-custom-volume-post-v1-batches/llms.txt): 50% complete, live

## Vouch's calls (2)

- `POST /v1/batches`: [Vouch, free, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/free-post-v1-batches/llms.txt)
- `GET /v1/verify`: [Vouch, free, GET /v1/verify](https://datacircle.dev/validate-email-apis/vouch/free-get-v1-verify/llms.txt)

## Vouch's APIs (1)

- [Vouch Email verification API pricing, 9 plans, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/free-post-v1-batches/llms.txt)

## Vouch: email verification API alternatives

[Vouch alternatives: every email verification API provider ranked](https://datacircle.dev/vouch-alternatives.txt)

We list Vouch's cheapest paid plan first. Next we list other providers' plans closest to Vouch in price per 1,000 emails. Each plan in the list gives live data.

- [Vouch, €3,000 pack, 1,000,000 credits, POST /v1/batches](https://datacircle.dev/validate-email-apis/vouch/3000-pack-1000000-credits-post-v1-batches/llms.txt): $3.376 per 1,000, 50% complete, live
- [OxiBounce, €149 pack, 50 000 vérifications, POST /list](https://datacircle.dev/validate-email-apis/oxibounce/149-pack-50-000-verifications-post-list/llms.txt): $3.353 per 1,000, 50% complete, live
- [Captain Verify, €75 pack, 25,000 Email Verifications, on demand, GET /verify](https://datacircle.dev/validate-email-apis/captain-verify/75-pack-25000-email-verifications-on-demand-get-verify/llms.txt): $3.376 per 1,000, 33% complete, live
- [Openapi.com, top-up, Single request, POST /email-start/{email}](https://datacircle.dev/validate-email-apis/openapi-com/top-up-single-request-post-email-start-email/llms.txt): $3.376 per 1,000, 33% complete, live
- [ZeroBounce, $1,699 monthly, ZeroBounce ONE, 500,000 credits a month, POST /v2/validatebatch](https://datacircle.dev/validate-email-apis/zerobounce/1699-monthly-zerobounce-one-500000-credits-a-month-post-v2-validatebatch/llms.txt): $3.398 per 1,000, 83% 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 2026-11-11.

- https://vouch.fast/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- https://vouch.fast/_next/static/chunks/0ns4gij1ryvk4.js?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://vouch.fast/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://vouch.fast/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://vouch.fast/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing