# Crustdata, contact us, Real-time API access, POST /batch/person/identify: Reverse email lookup API

> Resolve a bulk list of emails (business or personal) or professional_network_profile_urls to the people behind them, reverse email lookup, as a single asynchronous job.

Crustdata's reverse email lookup API on its Real-time API access plan. It returns 3 of the 13 key fields we check: Experience, Headline, Location.
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/crustdata/contact-us-real-time-api-access-post-batch-person-identify
- [Best reverse email lookup API in 2026](https://datacircle.dev/best-reverse-email-lookup-api.txt)
- Get it: https://crustdata.com/pricing
- Request: `POST https://api.crustdata.com/batch/person/identify`
- API key: with the plan, on https://crustdata.com/pricing
- Its API docs: https://docs.crustdata.com/api-reference/batch-apis/submit-a-batch-person-identify-reverse-email-lookup-job
- Sold by: Crustdata (https://crustdata.com)
- Checked: 2026-10-23

## In the answer

- Completeness: 23%
- Experience: ✓ current job
- Headline: ✓
- Location: ✓

## Price

- Per: result
- Billing: contact

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: People enrich (/person/enrich) · Contact enrich (/person/contact/enrich) · People search (/person/search) · People identify (/person/identify) · Batch contact enrich (/batch/person/contact/enrich) · Developer profile enrich (/dev_platform/enrich) · Person verify (/batch/person/verify) · Live people search (/person/professional_network/search/live) · Live people enrich (/person/professional_network/enrich/live) · Company search (/company/search) · Company enrich (/company/enrich) · Employee review enrich (/employee_review/enrich) · Live company search (/company/professional_network/search/live) · Job search (/job/search) · Live job search (/job/professional_network/search/live) · Web search (/web/search/live) · Web fetch (/web/enrich/live) · Social post search (/social_post/search) · Social post live search (/social_post/professional_network/search/live) · Social post live enrich (/social_post/professional_network/enrich/live) · People search watcher (/watch/person/search) · Company search watcher (/watch/company/search) · Job search watcher (/watch/job/search) · Social post search watcher (/watch/social_post/search) · Person watcher (/watch/person) · Company watcher (/watch/company)

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Resolve a bulk list of emails (business or personal) or professional_network_profile_urls to the people behind them, reverse email lookup, as a single asynchronous job.

## Data

- Freshness: 30 days
- Keep data: no API terms
- Use data: no API terms

## Rate limit

- Per second: 0.083
- Concurrent: 5
- Batch: 300

## Speed

- Answer: by polling or webhook

## The call

- You send: one of emails, business_emails or professional_network_profile_urls, and x-api-version header "2025-11-01". Optional: webhook_url
- Method: POST
- Path: /batch/person/identify

## About the plan

- Plan: Real-time API access
- Who can get it: anyone

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

matched on, match type, match status, confidence score, Crustdata person ID, name, headline, current title, normalized title, location, profile URL, GitHub URL, Twitter handle, updated at

## Crustdata's plans (2)

- [Crustdata, contact us, Real-time API access, POST /batch/person/identify](https://datacircle.dev/reverse-email-lookup-apis/crustdata/contact-us-real-time-api-access-post-batch-person-identify/llms.txt): 23% complete, 30 days
- [Crustdata, contact us, In-DB API access](https://datacircle.dev/reverse-email-lookup-apis/crustdata/contact-us-in-db-api-access/llms.txt): 23% complete, 30 days

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

- `POST /batch/person/identify`: [Crustdata, contact us, Real-time API access, POST /batch/person/identify](https://datacircle.dev/reverse-email-lookup-apis/crustdata/contact-us-real-time-api-access-post-batch-person-identify/llms.txt)
- `POST /person/identify`: [Crustdata, contact us, Real-time API access, POST /person/identify](https://datacircle.dev/reverse-email-lookup-apis/crustdata/contact-us-real-time-api-access-post-person-identify/llms.txt)

## Crustdata's APIs (9)

- [Crustdata: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/crustdata/free-20-free-credits/llms.txt)
- [Crustdata: job postings API pricing, 4 plans](https://datacircle.dev/job-posting-apis/crustdata/free-20-free-credits/llms.txt)
- [Crustdata: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/crustdata/free-20-free-credits/llms.txt)
- [Crustdata: web search API pricing, 4 plans](https://datacircle.dev/web-search-apis/crustdata/free-20-free-credits/llms.txt)
- [Crustdata: LinkedIn profile API pricing, 4 plans](https://datacircle.dev/linkedin-profile-apis/crustdata/free-20-free-credits/llms.txt)
- [Crustdata: company discovery API pricing, 4 plans, POST /company/search, Search Companies](https://datacircle.dev/company-discovery-apis/crustdata/free-20-free-credits-post-company-search-search-companies/llms.txt)
- [Crustdata: company discovery API pricing, 4 plans, POST /company/search, Search Companies, full](https://datacircle.dev/company-discovery-apis/crustdata/free-20-free-credits-post-company-search-search-companies-full/llms.txt)
- [Crustdata: LinkedIn post search API pricing, 2 plans](https://datacircle.dev/linkedin-post-search-apis/crustdata/contact-us-real-time-api-access/llms.txt)
- [Crustdata: email finder API pricing, 1 plan, POST /batch/person, Batch Contact Enrich](https://datacircle.dev/find-email-apis/crustdata/contact-us-real-time-api-access-post-batch-person-contact-enrich-batch-contact-enrich/llms.txt)
- [Crustdata: email finder API pricing, 1 plan, POST /batch/person, Batch Contact Enrich, full](https://datacircle.dev/find-email-apis/crustdata/contact-us-real-time-api-access-post-batch-person-contact-enrich-batch-contact-enrich-full/llms.txt)
- [Crustdata: email finder API pricing, 1 plan, POST /person, Contact Enrich](https://datacircle.dev/find-email-apis/crustdata/contact-us-real-time-api-access-post-person-contact-enrich-contact-enrich/llms.txt)
- [Crustdata: email finder API pricing, 1 plan, POST /person, Contact Enrich, full](https://datacircle.dev/find-email-apis/crustdata/contact-us-real-time-api-access-post-person-contact-enrich-contact-enrich-full/llms.txt)
- [Crustdata: reverse email lookup API pricing, 2 plans, POST /batch/person/identify](https://datacircle.dev/reverse-email-lookup-apis/crustdata/contact-us-real-time-api-access-post-batch-person-identify/llms.txt)

## Crustdata: reverse email lookup API alternatives

- [Village, contact us, Forward-deployed, POST /v2/people/enrich/by-email, Reverse Lookup by Email, realtime only](https://datacircle.dev/reverse-email-lookup-apis/village/contact-us/llms.txt): 31% complete, live
- [BetterEnrich, contact us, Enterprise, 250K credits](https://datacircle.dev/reverse-email-lookup-apis/betterenrich/contact-us-enterprise-250k-credits/llms.txt): 15% complete, live
- [Databar, contact us](https://datacircle.dev/reverse-email-lookup-apis/databar/contact-us/llms.txt): 23% complete, live
- [Sumble, contact us, Enterprise, POST /v9/people, People](https://datacircle.dev/reverse-email-lookup-apis/sumble/contact-us-enterprise-post-v9-people-people/llms.txt): 23% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-23.

- https://crustdata.com/apis/people-enrichment
- https://crustdata.com/pricing
- https://crustdata.com/terms
- https://docs.crustdata.com/api-reference/batch-apis/submit-a-batch-person-identify-reverse-email-lookup-job
- https://docs.crustdata.com/general/credits
- https://docs.crustdata.com/general/data-updates
- https://docs.crustdata.com/general/pricing
- https://docs.crustdata.com/general/rate-limits
- https://docs.crustdata.com/person-docs/identify/introduction