# Enrich.so, free, POST /reverse-lookup/bulk-lookup: Reverse email lookup API

> Submit up to 100 000 emails and get back professional profile data for each one. Duplicate emails are removed (case-insensitive) before processing.

Enrich.so's reverse email lookup API on its Free plan. It costs $0.00 per 1,000 people. It returns 9 of the 13 key fields we check: Experience, Education, Skills, Headline, About, Location, Photo, Connections, 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/enrich-so/free-post-reverse-lookup-bulk-lookup
- [Best reverse email lookup API in 2026](https://datacircle.dev/best-reverse-email-lookup-api.txt)
- Get it: https://enrich.so/pricing
- Request: `POST https://dev.enrich.so/api/v3/reverse-lookup/bulk-lookup`
- API key: with the plan, on https://enrich.so/pricing
- Its API docs: https://doc.enrich.so/look-up-professional-profiles-in-batch-27483204e0
- Sold by: Enrich.so (https://enrich.so)
- Checked: 2026-10-23

## In the answer

- Completeness: 69%
- Experience: ✓
- Education: ✓
- Skills: ✓
- Headline: ✓
- About: ✓
- Location: ✓
- Photo: ✓
- Connections: ✓
- Languages: ✓ profile language

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: Lead Finder search · from the same budget: Email Finder · Email Validation · Phone Finder · Employee Finder · Company Followers · Follower count preview · IP to Company · Line Intelligence · Workbench · Submit a domain search · Reveal contact info · Enrich contacts with specific fields · Export leads to CSV (async) · Validate emails in batch · Find emails in batch · Find a personal email by LinkedIn URL · Find personal emails in batch · Find phone numbers in batch · Cascading ICP people search · Look up a professional profile by email

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Submit up to 100 000 emails and get back professional profile data for each one. Duplicate emails are removed (case-insensitive) before processing.

## Data

- Freshness: stored
- Keep data: no limit, but its service's content is not copied, modified or distributed without Enrich.so's prior written consent
- Use data: You may only use the Services in compliance with these Terms and all applicable local, state, national and international laws, rules and regulations. [...] You may use our Services, on a non-exclusive basis, solely in strict compliance with these Terms, which may be updated from time to time, and applicable law. [...] users must not engage in any activities that are illegal, fraudulent, or malicious. Users must also not engage in any activities that could cause damage or harm to Enrich.so or its users. Any misuse of our service is strictly prohibited. [...] Users may not copy, modify, or distribute any of our service's content or use it for any commercial purpose without our prior written consent.

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 10 results, once

## Rate limit

- Per second: 1
- Batch: 100,000

## Speed

- Answer: by polling or webhook

## The call

- You send: emails. Optional: webhookUrl
- Method: POST
- Path: /reverse-lookup/bulk-lookup

## About the plan

- Plan: Free
- Who can get it: anyone 18 or over, on a new account, for an organization, someone with authority to bind it

## The 47 fields the plan's answer can hold

success, profile ID, name, first name, last name, headline, about, current company, location, profile picture, profile URL, report profile URL, connections, connections approximate, public profile, skills, locale country, locale language, schools, school count, school degree, school start date, school end date, school name, school location, school logo, jobs, job count, job title, job start date, job end date, job description, job company, job company location, job company logo, credits consumed, request ID, credits remaining, batch ID, batch status, total items, processed items, successful items, failed items, page, page size, credits refunded

## Enrich.so's plans (5)

- [Enrich.so, free, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/free-post-reverse-lookup-bulk-lookup/llms.txt): $0.00 per 1,000, 69% complete, stored
- [Enrich.so, $49 monthly, Growth, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/49-monthly-growth-post-reverse-lookup-bulk-lookup/llms.txt): $4.90 per 1,000, 69% complete, stored
- [Enrich.so, $149 monthly, Scale, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/149-monthly-scale-post-reverse-lookup-bulk-lookup/llms.txt): $2.98 per 1,000, 69% complete, stored
- [Enrich.so, $499 monthly, Pro, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/499-monthly-pro-post-reverse-lookup-bulk-lookup/llms.txt): $1.996 per 1,000, 69% complete, stored
- [Enrich.so, contact us, Enterprise, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/contact-us-enterprise-post-reverse-lookup-bulk-lookup/llms.txt): 69% complete, stored

## Enrich.so's calls for this API (2)

- `POST /reverse-lookup/lookup`: [Enrich.so, free, POST /reverse-lookup/lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/free-post-reverse-lookup-lookup/llms.txt)
- `POST /reverse-lookup/bulk-lookup`: [Enrich.so, free, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/free-post-reverse-lookup-bulk-lookup/llms.txt)

## Enrich.so's APIs (7)

- [Enrich.so: LinkedIn people search API pricing, 5 plans, POST /people-search/waterfall-icp-search](https://datacircle.dev/linkedin-people-search-apis/enrich-so/free-free-post-people-search-waterfall-icp-search/llms.txt)
- [Enrich.so: LinkedIn people search API pricing, 5 plans, POST /people-search/employee-finder](https://datacircle.dev/linkedin-people-search-apis/enrich-so/free/llms.txt)
- [Enrich.so: email finder API pricing, 5 plans, POST /lead-finder/enrich, Enrich contacts with specific fields](https://datacircle.dev/find-email-apis/enrich-so/free-free-post-lead-finder-enrich/llms.txt)
- [Enrich.so: email finder API pricing, 5 plans, POST /linkedin-to-personal-email](https://datacircle.dev/find-email-apis/enrich-so/free-post-linkedin-to-personal-email/llms.txt)
- [Enrich.so: email finder API pricing, 5 plans, POST /email-finder](https://datacircle.dev/find-email-apis/enrich-so/free/llms.txt)
- [Enrich.so: email finder API pricing, 5 plans, POST /email-finder/batch](https://datacircle.dev/find-email-apis/enrich-so/free-free-post-email-finder-batch/llms.txt)
- [Enrich.so: email finder API pricing, 5 plans, POST /linkedin-to-personal-email/batch](https://datacircle.dev/find-email-apis/enrich-so/free-post-linkedin-to-personal-email-batch/llms.txt)
- [Enrich.so: email finder API pricing, 5 plans, POST /lead-finder/reveal, Reveal contact info](https://datacircle.dev/find-email-apis/enrich-so/free-free-post-lead-finder-reveal/llms.txt)
- [Enrich.so: people search API pricing, 5 plans, POST /lead-finder/export, Export leads to CSV (async)](https://datacircle.dev/people-search-apis/enrich-so/free-post-lead-finder-export/llms.txt)
- [Enrich.so: people search API pricing, 5 plans, POST /lead-finder/search](https://datacircle.dev/people-search-apis/enrich-so/free-post-lead-finder-search/llms.txt)
- [Enrich.so: people search API pricing, 5 plans, POST /domain-search/batch, Submit a domain search](https://datacircle.dev/people-search-apis/enrich-so/free-free-post-domain-search-batch/llms.txt)
- [Enrich.so: reverse email lookup API pricing, 5 plans, POST /reverse-lookup/bulk-lookup](https://datacircle.dev/reverse-email-lookup-apis/enrich-so/free-post-reverse-lookup-bulk-lookup/llms.txt)
- [Enrich.so: email verification API pricing, 5 plans, POST /email-validation](https://datacircle.dev/validate-email-apis/enrich-so/free/llms.txt)
- [Enrich.so: email verification API pricing, 5 plans, POST /email-validation/batch](https://datacircle.dev/validate-email-apis/enrich-so/free-free-post-email-validation-batch/llms.txt)
- [Enrich.so: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/enrich-so/49-monthly/llms.txt)
- [Enrich.so: phone finder API pricing, 4 plans, POST /lead-finder/enrich, Enrich contacts with specific fields](https://datacircle.dev/find-phone-apis/enrich-so/49-monthly-growth-post-lead-finder-enrich/llms.txt)
- [Enrich.so: phone finder API pricing, 4 plans, POST /lead-finder/enrich, Enrich contacts with specific fields, full](https://datacircle.dev/find-phone-apis/enrich-so/49-monthly-growth-post-lead-finder-enrich-enrich-contacts-with-specific-fields-full/llms.txt)
- [Enrich.so: phone finder API pricing, 4 plans, GET /reverse-lookup/phones](https://datacircle.dev/find-phone-apis/enrich-so/49-monthly-growth-get-reverse-lookup-phones/llms.txt)
- [Enrich.so: phone finder API pricing, 4 plans, POST /reverse-lookup/phones/bulk](https://datacircle.dev/find-phone-apis/enrich-so/49-monthly-growth-post-reverse-lookup-phones-bulk/llms.txt)
- [Enrich.so: phone finder API pricing, 4 plans, POST /lead-finder/reveal, Reveal contact info](https://datacircle.dev/find-phone-apis/enrich-so/49-monthly-growth-post-lead-finder-reveal/llms.txt)
- [Enrich.so: phone finder API pricing, 4 plans, POST /lead-finder/reveal, Reveal contact info, full](https://datacircle.dev/find-phone-apis/enrich-so/49-monthly-growth-post-lead-finder-reveal-reveal-contact-info-full/llms.txt)

## Enrich.so: reverse email lookup API alternatives

- [Anysite, $200 monthly, Growth, POST /api/linkedin/email/sql/user](https://datacircle.dev/reverse-email-lookup-apis/anysite/200-monthly-growth-post-api-linkedin-email-sql-user/llms.txt): $2.00 per 1,000, 92% complete, stored
- [Minelead, $2,748 yearly](https://datacircle.dev/reverse-email-lookup-apis/minelead/2748-yearly/llms.txt): $2.29 per 1,000, 38% complete, stored
- [B2B Enrich Search on Apify, $10,788 yearly](https://datacircle.dev/reverse-email-lookup-apis/b2b-enrich-search-on-apify/10788-yearly/llms.txt): $2.304 per 1,000, 23% complete, stored
- [Argorant, $9,108 yearly](https://datacircle.dev/reverse-email-lookup-apis/argorant/9108-yearly/llms.txt): $2.53 per 1,000, 15% 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 2026-10-23.

- https://doc.enrich.so/api-reference-1951025m0
- https://doc.enrich.so/credits-pricing-1951027m0
- https://doc.enrich.so/export-leads-to-csv-async-28165855e0
- https://doc.enrich.so/get-bulk-lookup-results-27483206e0
- https://doc.enrich.so/introduction-1951028m0
- https://doc.enrich.so/llms.txt
- https://doc.enrich.so/look-up-a-professional-profile-by-email-27483203e0
- https://doc.enrich.so/look-up-professional-profiles-in-batch-27483204e0
- https://doc.enrich.so/rate-limits-1951030m0
- https://doc.enrich.so/submit-a-domain-search-42110694e0
- https://enrich.so
- https://enrich.so/pricing
- https://enrich.so/privacy
- https://enrich.so/solutions/reverse-email-lookup
- https://enrich.so/terms