# Proofwire, free: Email finder API

> Name and domain to an address that was checked, not guessed

Proofwire's Free plan for the email finder API costs $0.00 per 1,000 emails. Proofwire's docs list none of the 10 fields on our checklist: Verification, Confidence, Catch-all domain, Where found and 6 more.
We haven't run Proofwire through [our email finder API benchmark](https://datacircle.dev/best-email-finder-api.txt) yet.
This plan is free. We rank 1,683 plans for email finder APIs by price. Half the plans cost $20.00 per 1,000 emails or less. [See how many email finder API plans are free.](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.
[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/proofwire/free
- [Email finder API: the best of 90+ providers compared](https://datacircle.dev/best-email-finder-api.txt)
- Get it: https://proofwire.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- Request: Docs behind sign-up
- API key: with the plan, on https://proofwire.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- Its API docs: https://proofwire.app/changelog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- Sold by: Proofwire (https://proofwire.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 emails: $0.00
- Per: call
- 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: Name and domain to an address that was checked, not guessed

## Data

- Freshness: live
- What it checks: mail servers, mailbox
- Keep data: no limit
- Use data: Checking whether contact details you already hold are real and reachable: cleaning a list before you send to it, screening a signup form, deciding whether a number is worth dialling, scoring an address at checkout. [...] What it is not for: Discovering contact details you do not have. [...] Validating a list you have no right to hold. [...] Sending to people who have not agreed to hear from you. [...] Calling numbers on a Do Not Call registry. [...] Surveillance or profiling of a specific individual. [...] Reselling the raw results as a data product. [...] Have a lawful basis for the data you send us, use the service within the acceptable use policy, and keep your API keys secret.

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: about 6 calls, once
- Expires: never

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Free
- Who can get it: anyone

## The only field the plan's answer can hold

email

## Proofwire's plans (1)

- [Proofwire, free](https://datacircle.dev/find-email-apis/proofwire/free/llms.txt): $0.00 per 1,000, 0% complete, live

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

- Docs behind sign-up: [Proofwire, free](https://datacircle.dev/find-email-apis/proofwire/free/llms.txt)

## Proofwire's APIs (5)

- [Proofwire: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/proofwire/free/llms.txt)
- [Proofwire: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/proofwire/free/llms.txt)
- [Proofwire: email finder API pricing, 1 plan](https://datacircle.dev/find-email-apis/proofwire/free/llms.txt)
- [Proofwire: IP company lookup API pricing, 1 plan](https://datacircle.dev/ip-company-lookup-apis/proofwire/free/llms.txt)
- [Proofwire: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/proofwire/free/llms.txt)

## Proofwire: email finder API alternatives

- [Enrich.so, free, POST /email-finder](https://datacircle.dev/find-email-apis/enrich-so/free/llms.txt): $0.00 per 1,000, 40% complete, live
- [Sealch, free](https://datacircle.dev/find-email-apis/sealch/free/llms.txt): $0.00 per 1,000, 20% complete, live
- [Clearout, free](https://datacircle.dev/find-email-apis/clearout/free/llms.txt): $0.00 per 1,000, 30% complete, live
- [Anymail Finder, free](https://datacircle.dev/find-email-apis/anymail-finder/free/llms.txt): $0.00 per 1,000, 40% 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 2026-11-07.

- https://proofwire.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/changelog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/integrations?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/legal/acceptable-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/legal/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing
- https://proofwire.app/signup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-finder-api-pricing