# Leadsets, free: Email verification API

> Check one email or up to 100 in one call. Each gets a status, a confidence score and the date it was checked.

Leadsets' Free plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields. Leadsets' docs list 3: Address, Deliverability, Confidence.
We haven't run Leadsets through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
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/leadsets/free
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://www.leadsets.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.leadsets.ai/v1/emails/verify`
- API key: with the plan, on https://www.leadsets.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://www.leadsets.ai/docs/api/emails-verify?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Leadsets (https://www.leadsets.ai?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: Search people · Search companies · from the same budget: Enrich a person · Enrich a company

## 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: Check one email or up to 100 in one call. Each gets a status, a confidence score and the date it was checked.

## Data

- Freshness: 30 days
- What it checks: format, mailbox
- Keep data: no limit
- Use data: Use must follow our Fair use policy. In short: no reselling or rebuilding our data, no key sharing across companies, no evading limits, no unlawful outreach, and no scraping of sites through Leadsets that you aren't allowed to access. [...] We grant you a non-exclusive, non-transferable licence to use records returned to you for your own sales, marketing and research. Embedding Leadsets data in a product you sell requires a separate written agreement. You must stop using any record we tell you has been suppressed.

## Plan

- Pay: $0
- You get: 1,000 results
- Enough for: 1,000 results, once
- Expires: never

## Rate limit

- Batch: 100

## Speed

- Answer: in the call

## The call

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

## About the plan

- Plan: Free
- Who can get it: anyone using it for business purposes, 18 or older (its terms: "You must be at least 18 and using Leadsets for business purposes")

## The 5 fields the plan's answer can hold

email address, status, confidence, checked at, MX provider

## Leadsets' plans (5)

- [Leadsets, free](https://datacircle.dev/validate-email-apis/leadsets/free/llms.txt): $0.00 per 1,000, 50% complete, 30 days
- [Leadsets, $29 monthly](https://datacircle.dev/validate-email-apis/leadsets/29-monthly/llms.txt): 50% complete, 30 days
- [Leadsets, $99 monthly](https://datacircle.dev/validate-email-apis/leadsets/99-monthly/llms.txt): 50% complete, 30 days
- [Leadsets, $399 monthly](https://datacircle.dev/validate-email-apis/leadsets/399-monthly/llms.txt): 50% complete, 30 days
- [Leadsets, $999 monthly](https://datacircle.dev/validate-email-apis/leadsets/999-monthly/llms.txt): 50% complete, 30 days

## Leadsets' calls for this API (1)

- `POST /emails/verify`: [Leadsets, free](https://datacircle.dev/validate-email-apis/leadsets/free/llms.txt)

## Leadsets' APIs (7)

- [Leadsets Company discovery API pricing, 5 plans](https://datacircle.dev/company-discovery-apis/leadsets/free/llms.txt)
- [Leadsets Company enrichment API pricing, 5 plans](https://datacircle.dev/company-enrichment-apis/leadsets/free/llms.txt)
- [Leadsets Email verification API pricing, 5 plans](https://datacircle.dev/validate-email-apis/leadsets/free/llms.txt)
- [Leadsets People search API pricing, 5 plans](https://datacircle.dev/people-search-apis/leadsets/free/llms.txt)
- [Leadsets Email finder API pricing, 5 plans, POST /people/enrich, Enrich a person](https://datacircle.dev/find-email-apis/leadsets/free-post-people-enrich-enrich-a-person/llms.txt)
- [Leadsets Email finder API pricing, 5 plans, POST /people/enrich, Enrich a person, full](https://datacircle.dev/find-email-apis/leadsets/free-post-people-enrich-enrich-a-person-full/llms.txt)
- [Leadsets People enrichment API pricing, 5 plans, POST /people/enrich, Enrich a person](https://datacircle.dev/person-enrichment-apis/leadsets/free-post-people-enrich-enrich-a-person/llms.txt)
- [Leadsets People enrichment API pricing, 5 plans, POST /people/enrich, Enrich a person, full](https://datacircle.dev/person-enrichment-apis/leadsets/free-post-people-enrich-enrich-a-person-full/llms.txt)
- [Leadsets Web scraping API pricing, 3 plans](https://datacircle.dev/web-scraping-apis/leadsets/9-pack/llms.txt)

## Leadsets: email verification API alternatives

[Leadsets alternatives: other email verification API providers by price](https://datacircle.dev/leadsets-alternatives.txt)

We list other providers' plans closest to this plan in price per 1,000 emails. Each plan in the list gives live data or data at most a month old.

- [Validemail.co, free, POST /api/v1/bulk](https://datacircle.dev/validate-email-apis/validemail-co/free-post-api-v1-bulk/llms.txt): $0.00 per 1,000, 67% complete, live
- [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
- [Fetchify, free](https://datacircle.dev/validate-email-apis/fetchify/free/llms.txt): $0.00 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 2026-11-11.

- https://www.leadsets.ai/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/docs/api/emails-verify?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/docs/authentication?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/docs/limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/fair-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/fair-use/enrichment?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/pricing/free?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/pricing/max?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/pricing/pro?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/pricing/solo?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/pricing/team?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.leadsets.ai/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing