# CampaignKit, free: Email finder API

> The Email Finder endpoint allows you to discover verified email addresses from a person’s name and company domain.

CampaignKit's Free plan for the email finder API costs $0.00 per 1,000 emails. CampaignKit's docs list 2 of the 10 fields on our checklist: Name, Company.
We haven't run CampaignKit through [our email finder API benchmark](https://datacircle.dev/best-email-finder-api.txt) yet.
This plan is free. We rank 1,712 plans for email finder APIs by price. Half the plans cost $20.00 or less per 1,000 emails. [See the best free email finder API plan.](https://datacircle.dev/best-email-finder-api.txt)
[ClearBounce's $3.20 monthly plan](https://datacircle.dev/find-email-apis/clearbounce/3-20-monthly/llms.txt) is the cheapest paid plan per 1,000 emails. ClearBounce's $3.20 monthly plan charges nothing per call. You get as many emails as ClearBounce's rate limit allows. [StableEnrich's pay-as-you-go plan](https://datacircle.dev/find-email-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-enrich/llms.txt) costs the least for 10,000 emails a month: $1.00.
[ClearBounce's $4 pack](https://datacircle.dev/find-email-apis/clearbounce/4-pack/llms.txt) covers any number of emails. ClearBounce's $4 pack costs more up front than ClearBounce's $3.20 monthly plan.
[GetProspect](https://datacircle.dev/find-email-apis/getprospect/399-monthly-growth-50k-post-v2-email-find/llms.txt), [DiscoLike](https://datacircle.dev/find-email-apis/discolike/399-monthly-team-post-email-find/llms.txt) and [Icypeas](https://datacircle.dev/find-email-apis/icypeas/499-monthly-hypergrowth-100000-credits-a-month-post-email-search/llms.txt) are the best email finder API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/find-email-apis/campaignkit/free
- [Email finder API: the best of 100+ providers compared](https://datacircle.dev/best-email-finder-api.txt)
- Get it: https://campaignkit.cc/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- Request: `POST https://api.campaignkit.cc/v1/email/find`
- API key: with the plan, on https://campaignkit.cc/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- Its API docs: https://campaignkit.cc/docs/api/email-finder?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- Sold by: CampaignKit (https://campaignkit.cc?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 20%
- Name: ✓
- Company: ✓

## Price

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

## Strengths

- Strengths: found live

## Aggregators

- Aggregators: none

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: The Email Finder endpoint allows you to discover verified email addresses from a person’s name and company domain.

## Data

- Freshness: live
- What it checks: mailbox
- Keep data: no limit
- Use data: You may use the Services only for lawful purposes and in accordance with these Terms. You agree to use the Services for legitimate email verification purposes, such as: Validating opt-in email addresses for marketing campaigns, Cleaning your own email lists, Verifying business contact information, Improving email deliverability for your organization [...] You agree NOT to use the Services for any of the following prohibited activities: Spam: Sending unsolicited bulk emails or facilitating spam operations, Reselling Email Lists: Creating, maintaining, or selling email lists without proper consent, Scraping: Using the Services to scrape, harvest, or collect email addresses from websites without authorization, Malicious Activities: Using the Services for phishing, fraud, identity theft, or other criminal activities, Harassment: Using verified email addresses to harass, abuse, or harm individuals, Violation of Laws: Using the Services in any manner that violates applicable laws, including CAN-SPAM Act, GDPR, or other anti-spam regulations, System Abuse: Attempting to bypass rate limits, access restrictions, or security measures, Reverse Engineering: Attempting to reverse engineer, decompile, or extract the underlying algorithms of the Services, Automated Access: Using bots, scrapers, or automated tools to access the Services outside of our official API [...] We grant you a limited, non-exclusive, non-transferable, non-sublicensable license to access and use the Services for your internal business purposes in accordance with these Terms. You may not: Copy, modify, or create derivative works of the Services, Reverse engineer, decompile, or disassemble the Services, Remove or alter any proprietary notices from the Services, Use the Services to build a competing service

## Plan

- Pay: $0
- You get: 200 credits
- Enough for: 40 results, once

## Rate limit

- Per second: 0.17
- Batch: 20

## Speed

- Answer: in the call

## The call

- You send: Content-Type header "application/json", entries[].domain, one of entries[].name, entries[].firstName or entries[].lastName
- Method: POST
- Path: /email/find

## About the plan

- Plan: Free
- Who can get it: every new account

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

name, domain, email, found, credits used

## CampaignKit's plans (11)

- [CampaignKit, free](https://datacircle.dev/find-email-apis/campaignkit/free/llms.txt): $0.00 per 1,000, 20% complete, live
- [CampaignKit, $6 pack](https://datacircle.dev/find-email-apis/campaignkit/6-pack/llms.txt): $12.00 per 1,000, 20% complete, live
- [CampaignKit, $12 pack](https://datacircle.dev/find-email-apis/campaignkit/12-pack/llms.txt): $12.00 per 1,000, 20% complete, live
- [CampaignKit, $15 pack](https://datacircle.dev/find-email-apis/campaignkit/15-pack/llms.txt): $7.50 per 1,000, 20% complete, live
- [CampaignKit, $38 pack](https://datacircle.dev/find-email-apis/campaignkit/38-pack/llms.txt): $7.60 per 1,000, 20% complete, live
- [CampaignKit, $75 pack](https://datacircle.dev/find-email-apis/campaignkit/75-pack/llms.txt): $7.50 per 1,000, 20% complete, live
- [CampaignKit, $120 pack](https://datacircle.dev/find-email-apis/campaignkit/120-pack/llms.txt): $6.00 per 1,000, 20% complete, live
- [CampaignKit, $199 pack](https://datacircle.dev/find-email-apis/campaignkit/199-pack/llms.txt): $3.98 per 1,000, 20% complete, live
- [CampaignKit, $279 pack](https://datacircle.dev/find-email-apis/campaignkit/279-pack/llms.txt): $2.79 per 1,000, 20% complete, live
- [CampaignKit, $429 pack](https://datacircle.dev/find-email-apis/campaignkit/429-pack/llms.txt): $2.145 per 1,000, 20% complete, live
- [CampaignKit, contact us](https://datacircle.dev/find-email-apis/campaignkit/contact-us/llms.txt): 20% complete, live

## CampaignKit's calls for this API (1)

- `POST /email/find`: [CampaignKit, free](https://datacircle.dev/find-email-apis/campaignkit/free/llms.txt)

## CampaignKit's APIs (2)

- [CampaignKit: email finder API pricing, 11 plans](https://datacircle.dev/find-email-apis/campaignkit/free/llms.txt)
- [CampaignKit: email verification API pricing, 11 plans, POST /email/validate/job](https://datacircle.dev/validate-email-apis/campaignkit/free-post-email-validate-job/llms.txt)
- [CampaignKit: email verification API pricing, 11 plans, POST /email/validate](https://datacircle.dev/validate-email-apis/campaignkit/free-post-email-validate/llms.txt)

## CampaignKit: email finder API alternatives

- [OrbiSearch, $207 pack, Enterprise, POST /v1/bulk-lookup](https://datacircle.dev/find-email-apis/orbisearch/207-pack-enterprise-post-v1-bulk-lookup/llms.txt): $2.07 per 1,000, 50% complete, live
- [AI Ark, $18,710 yearly, Usage-Based Plan, 9M Credits / Year, POST /v2/people/export/single](https://datacircle.dev/find-email-apis/ai-ark/18710-yearly-usage-based-plan-9m-credits-year-post-v2-people-export-single/llms.txt): $2.079 per 1,000, 60% complete, live (provider record ID, username, first name, last name, name, headline, current title, profile picture, cover image, birth date, about, LinkedIn URL, Twitter URL, GitHub URL, Facebook URL, location, short location, country, region, city, location coordinates, locale country, locale language, supported locales, languages, industry, schools, school ID, school name, school logo, school URL, school degree, school field of study, school grade, school start date, school end date, certifications, certification name, certification issuer, certification issuer ID, certification issuer URL, certification logo, certification URL, certification license, certification display source, certification issue date, certification expiration date, organizations, organization name, organization position, organization start date, organization end date, volunteering, volunteering title, volunteering company, volunteering cause, volunteering description, volunteering start date, volunteering end date, jobs, job company, job company ID, job company logo, job company URL, job company employee range, job company start date, job company end date, job title, job description, job employment type, job location, job start date, job end date, skills, creator, hiring, open to work, premium, verified, influencer, current department, current sub-department, current job function, current seniority, followers, connections, updated at, company ID, company name, company legal name, company description, company overview, company SEO description, company founded, company type, company industry, company employee count, company employee range, company logo, company website, company domain, company domain LTD, company LinkedIn URL, company Facebook URL, company Twitter URL, company Crunchbase URL, company revenue range, company revenue min, company revenue max, company funding type, company total funding, company last funding amount, company investor count, company funding count, company latest funding date, company funding rounds, company funding round date, company funding round amount, company funding round type, company funding round investors, company stock ticker, company stock URL, company IPO amount raised, company IPO valuation, company IPO share price, company IPO date, company exit count, company exits, company exit ID, company exit name, company exit image, company exit description, company acquisition count, company acquisitions, company acquisition ID, company acquisition name, company acquisition image, company acquisition role, company acquisition date, company investment count, company lead investment count, company investments, company investment ID, company investment name, company investment image, company investment is lead, company investment round ID, company investment round name, company investment round type, company investment round amount, company diversity investment count, company diversity investments, company diversity investment ID, company diversity investment name, company diversity investment image, company diversity investment round ID, company diversity investment round name, company diversity investment round type, company diversity investment round amount, company diversity investment spotlights, company diversity investment date, company IT spend, company HQ continent, company HQ country, company HQ state, company HQ city, company HQ street, company HQ postal code, company HQ address, company HQ coordinates, company locations, company location continent, company location country, company location city, company location street, company location postal code, company location address, company location coordinates, company technologies, company technology name, company technology category, company industries, company keywords, company hashtags, company languages, company sub-organizations, company SIC code, company NAICS code, company updated at: 30 days)
- [Sealch, $2,582 yearly](https://datacircle.dev/find-email-apis/sealch/2582-yearly/llms.txt): $2.152 per 1,000, 20% complete, live
- [EmailListVerify, top-up from $2,189](https://datacircle.dev/find-email-apis/emaillistverify/top-up-from-2189/llms.txt): $2.189 per 1,000, 20% 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 2026-11-08.

- https://campaignkit.cc/blog/hunter-io-alternative?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/docs/api/email-finder?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/docs/api/validation-jobs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/docs/getting-started?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/docs/mcp-server?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://campaignkit.cc/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing