# LeadBoxer, free, POST /v1/email-lookup: Reverse email lookup API

> Send a work email and get back the person, their role, their company and their location.

LeadBoxer's reverse email lookup API on its Free plan. It costs $0.00 per 1,000 people. It returns 4 of the 13 key fields we check: Experience, Headline, Location, Languages.
We rank 297 plans by price. [Village's $1 monthly plan](https://datacircle.dev/reverse-email-lookup-apis/village/1-monthly-core-post-v2-people-enrich-by-email-reverse-lookup-by-email-cached-only/llms.txt) costs the least per 1,000 people: as little as $0.0000039. Village's $1 monthly plan covers up to 259,200,000 people a month at no extra cost.
[Village's $25 pack (Reverse Lookup by Email, cached only)](https://datacircle.dev/reverse-email-lookup-apis/village/25-pack-1000-credits-post-v2-people-enrich-by-email-reverse-lookup-by-email-cached-only/llms.txt) covers any number of people. Village's $25 pack costs more to start than Village's $1 monthly plan.
[Village](https://datacircle.dev/reverse-email-lookup-apis/village/1-monthly/llms.txt), [BlitzAPI](https://datacircle.dev/reverse-email-lookup-apis/blitzapi/top-up-from-0-60/llms.txt) and [treg](https://datacircle.dev/reverse-email-lookup-apis/treg/top-up-from-200/llms.txt) are the best reverse email lookup API providers in our benchmark.

- This page: https://datacircle.dev/reverse-email-lookup-apis/leadboxer/free-post-v1-email-lookup
- [Best reverse email lookup API in 2026](https://datacircle.dev/best-reverse-email-lookup-api.txt)
- Get it: https://www.leadboxer.com/pricing
- Request: `POST https://api.leadboxer.com/v1/email-lookup`
- API key: with the plan, on https://www.leadboxer.com/pricing
- Its API docs: https://developers.leadboxer.com/reference/lookupemail
- Sold by: LeadBoxer (https://www.leadboxer.com)
- Checked: 2026-10-28

## In the answer

- Completeness: 31%
- Experience: ✓
- Headline: ✓
- Location: ✓
- Languages: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: IP Address Lookup · Domain Lookup · Email Lookup (GET) · Track Event

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Send a work email and get back the person, their role, their company and their location.

## Data

- Keep data: no limit
- Use data: Your rights to the Services are strictly limited to the rights expressly granted in this Agreement.

## Plan

- Pay: €0
- You get: 25,000 credits a month
- Enough for: 500 calls a month
- Expires: 1 month

## Rate limit

- Per second: 0.5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: firstName, lastName, companyName, companyDomain, datasetId
- Method: POST
- Path: /v1/email-lookup

## About the plan

- Plan: Free
- Who can get it: anyone

## The 14 fields the plan's answer can hold

email, full name, headline, LinkedIn URL, seniority, job function, location, language name, language proficiency, experience title, experience company name, experience start year, experience end year, experience current

## LeadBoxer's plans (13)

- [LeadBoxer, free, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/free-post-v1-email-lookup/llms.txt): $0.00 per 1,000, 31% complete
- [LeadBoxer, pay as you go, Platform pay per use, 25k - 100k credits, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/pay-as-you-go-platform-pay-per-use-25k-100k-credits-post-v1-email-lookup/llms.txt): $140.662 per 1,000, 31% complete
- [LeadBoxer, pay as you go, Platform pay per use, 100k - 250k credits, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/pay-as-you-go-platform-pay-per-use-100k-250k-credits-post-v1-email-lookup/llms.txt): $112.53 per 1,000, 31% complete
- [LeadBoxer, pay as you go, Platform pay per use, 250k - 1M credits, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/pay-as-you-go-platform-pay-per-use-250k-1m-credits-post-v1-email-lookup/llms.txt): $84.397 per 1,000, 31% complete
- [LeadBoxer, pay as you go, Platform pay per use, 1M - 3M credits, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/pay-as-you-go-platform-pay-per-use-1m-3m-credits-post-v1-email-lookup/llms.txt): $56.265 per 1,000, 31% complete
- [LeadBoxer, pay as you go, Platform pay per use, 3M - 10M credits, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/pay-as-you-go-platform-pay-per-use-3m-10m-credits-post-v1-email-lookup/llms.txt): $39.386 per 1,000, 31% complete
- [LeadBoxer, €149 monthly, Starter, billed monthly, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/149-monthly-starter-billed-monthly-post-v1-email-lookup/llms.txt): $83.835 per 1,000, 31% complete
- [LeadBoxer, €249 monthly, Growth, billed monthly, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/249-monthly-growth-billed-monthly-post-v1-email-lookup/llms.txt): $56.04 per 1,000, 31% complete
- [LeadBoxer, €449 monthly, Scale, billed monthly, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/449-monthly-scale-billed-monthly-post-v1-email-lookup/llms.txt): $25.263 per 1,000, 31% complete
- [LeadBoxer, €1,188 yearly, Starter, billed annually, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/1188-yearly-starter-billed-annually-post-v1-email-lookup/llms.txt): $55.702 per 1,000, 31% complete
- [LeadBoxer, €2,388 yearly, Growth, billed annually, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/2388-yearly-growth-billed-annually-post-v1-email-lookup/llms.txt): $44.787 per 1,000, 31% complete
- [LeadBoxer, €4,788 yearly, Scale, billed annually, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/4788-yearly-scale-billed-annually-post-v1-email-lookup/llms.txt): $22.45 per 1,000, 31% complete
- [LeadBoxer, contact us, Platform pay per use, 10M+ credits, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/contact-us-platform-pay-per-use-10m-credits-post-v1-email-lookup/llms.txt): 31% complete

## LeadBoxer's calls for this API (2)

- `POST /v1/email-lookup`: [LeadBoxer, free, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/free-post-v1-email-lookup/llms.txt)
- `GET /v1/email-lookup`: [LeadBoxer, free, GET /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/free-get-v1-email-lookup/llms.txt)

## LeadBoxer's APIs (2)

- [LeadBoxer: company enrichment API pricing, 13 plans](https://datacircle.dev/company-enrichment-apis/leadboxer/free/llms.txt)
- [LeadBoxer: reverse email lookup API pricing, 13 plans, POST /v1/email-lookup](https://datacircle.dev/reverse-email-lookup-apis/leadboxer/free-post-v1-email-lookup/llms.txt)

## LeadBoxer: reverse email lookup API alternatives

- [Findymail, $3,990 yearly, Business Plus, POST /api/search/reverse-email, Reverse email lookup, full](https://datacircle.dev/reverse-email-lookup-apis/findymail/3990-yearly-business-plus-post-api-search-reverse-email-reverse-email-lookup-full/llms.txt): $22.167 per 1,000, 54% complete
- [Khadin Akbar on Apify, $2,148 yearly](https://datacircle.dev/reverse-email-lookup-apis/khadin-akbar-on-apify/2148-yearly/llms.txt): $22.487 per 1,000, 38% complete
- [ScrapeLi, $13.50 pack, Pay-as-you-go 3,000 credits, POST /reverse-email/lookup/](https://datacircle.dev/reverse-email-lookup-apis/scrapeli/13-50-pack-pay-as-you-go-3000-credits-post-reverse-email-lookup/llms.txt): $22.50 per 1,000, 0% complete
- [Kendo, $34 monthly, Premium, GET /linkedinbyemail](https://datacircle.dev/reverse-email-lookup-apis/kendo/34-monthly-premium-get-linkedinbyemail/llms.txt): $22.667 per 1,000, 0% complete, stored

## 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://developers.leadboxer.com/docs/credit-usage-cost-model.md
- https://developers.leadboxer.com/docs/credits-rate-limits.md
- https://developers.leadboxer.com/reference/lookupemail
- https://help.leadboxer.com/leadboxer/account-and-billing/leadboxer-pricing-explained.md
- https://help.leadboxer.com/leadboxer/platform-and-api/developer-portal
- https://www.leadboxer.com/capabilities/contact-enrichment
- https://www.leadboxer.com/pricing
- https://www.leadboxer.com/resources/terms