# Bytemine, free, POST /fraud-check: Email verification API

> Risk score a signup or transaction using email, domain, IP, and behavioral signals. Catches disposable emails, fake domains, bot patterns, VPN and proxy traffic, and abusive signup behavior, and returns an allow, review, or block decision with itemized checks. Billed per check.

Bytemine's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Deliverability, Confidence, Company.
The cheapest of the 2,120 plans we rank by price is [treg, top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt). treg asks one provider after another until one answers. treg costs $0.00 per 1,000 emails on average. You pay $26.95 per 1,000 emails when no provider answers.
[Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/149-monthly/llms.txt), [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) and [treg](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/bytemine/free-post-fraud-check
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://www.bytemine.ai/pricing
- Request: `POST https://bvjmtgaxijpyasjtaqiv.supabase.co/functions/v1/fraud-check`
- API key: with the plan, on https://www.bytemine.ai/pricing
- Its API docs: https://app.bytemine.ai/api-reference
- Sold by: Bytemine (https://www.bytemine.ai)
- Checked: 2026-10-28

## In the answer

- Completeness: 50%
- Deliverability: ✓
- Confidence: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Search Prospects (simple) · Unlock Prospects · Get Contact by ID · Enrich Contact · Search Companies · Enrich by Company Name · Build ICP · Find Lookalikes · Enrich LinkedIn Profile · Search LinkedIn Profiles · Search LinkedIn Posts · Search Funding Signals · Search Acquisition Signals · Get Hiring Trends · Search Job Postings · Search Job Changes · Score Accounts for Buying Intent · Technology Stack for a Domain · Who Runs This Technology · Analyze Single Page · Discover Site Structure · Bulk Page Intelligence · Structured Intelligence Extract · Full Company Intelligence Report · Save Intelligence Snapshot · Detect Company Changes · Track a Company · Find Email by Name + Domain · Verify Single Email · Verify Emails (Batch) · Generate Proposal · Generate Meeting Brief · Generate Company Scorecard · Map a Market · Generate ROI Report

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Risk score a signup or transaction using email, domain, IP, and behavioral signals. Catches disposable emails, fake domains, bot patterns, VPN and proxy traffic, and abusive signup behavior, and returns an allow, review, or block decision with itemized checks. Billed per check.

## Data

- Keep data: no limit
- Use data: a limited, non-exclusive, non-transferable, non-sublicensable license to access and use the Services solely for internal business purposes including: Sales prospecting, Recruiting, Customer research, CRM enrichment [...] Customers may not: Resell, sublicense, or redistribute data obtained from the Services, Build a competing database or data brokerage service, Provide data to third parties outside their organization, Publish or distribute the data through APIs or public datasets, Reconstruct or replicate the platform database [...] Customers may not use the Services or data obtained through them to send spam, fraudulent or misleading communications, promote illegal goods, or engage in abusive or harassing outreach

## Plan

- Pay: $0
- You get: 100 credits a month
- Enough for: 100 calls a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: ip, name, email
- Method: POST
- Path: /fraud-check

## About the plan

- Plan: Free
- Who can get it: business users only: 18 or over, acting on behalf of a company

## The 13 fields the plan's answer can hold

MX valid, disposable, domain live, email valid, free provider, gibberish name, reason, signals, decision, confidence, risk score, known company, known contact

## Bytemine's plans (8)

- [Bytemine, free, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/free-post-fraud-check/llms.txt): $0.00 per 1,000, 50% complete
- [Bytemine, pay as you go](https://datacircle.dev/validate-email-apis/bytemine/pay-as-you-go/llms.txt): $10.00 per 1,000, 50% complete
- [Bytemine, top-up from $0.50](https://datacircle.dev/validate-email-apis/bytemine/top-up-from-0-50/llms.txt): $10.00 per 1,000, 50% complete
- [Bytemine, $250 monthly, Starter, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/250-monthly-starter-post-fraud-check/llms.txt): $25.00 per 1,000, 50% complete
- [Bytemine, $500 monthly, Growth, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/500-monthly-growth-post-fraud-check/llms.txt): $20.00 per 1,000, 50% complete
- [Bytemine, $1,000 monthly, Business, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/1000-monthly-business-post-fraud-check/llms.txt): $10.00 per 1,000, 50% complete
- [Bytemine, $2,500 monthly, Scale, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/2500-monthly-scale-post-fraud-check/llms.txt): $8.333 per 1,000, 50% complete
- [Bytemine, contact us, Enterprise, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/contact-us-enterprise-post-fraud-check/llms.txt): 50% complete

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

- `POST /fraud-check`: [Bytemine, free, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/free-post-fraud-check/llms.txt)
- `POST /emails/verify/single`: [Bytemine, free, POST /emails/verify/single](https://datacircle.dev/validate-email-apis/bytemine/free-post-emails-verify-single/llms.txt)

## Bytemine's APIs (15)

- [Bytemine: company discovery API pricing, 8 plans](https://datacircle.dev/company-discovery-apis/bytemine/free/llms.txt)
- [Bytemine: company enrichment API pricing, 8 plans](https://datacircle.dev/company-enrichment-apis/bytemine/free/llms.txt)
- [Bytemine: company funding API pricing, 8 plans](https://datacircle.dev/company-funding-apis/bytemine/free/llms.txt)
- [Bytemine: similar companies API pricing, 8 plans](https://datacircle.dev/similar-company-apis/bytemine/free/llms.txt)
- [Bytemine: tech stack API pricing, 8 plans](https://datacircle.dev/company-technology-apis/bytemine/free/llms.txt)
- [Bytemine: cached email finder API pricing, 8 plans](https://datacircle.dev/find-cached-email-apis/bytemine/free/llms.txt)
- [Bytemine: cached job postings API pricing, 8 plans](https://datacircle.dev/cached-job-posting-apis/bytemine/free/llms.txt)
- [Bytemine: people search API pricing, 8 plans](https://datacircle.dev/people-search-apis/bytemine/free/llms.txt)
- [Bytemine: cached reverse email lookup API pricing, 6 plans](https://datacircle.dev/cached-reverse-email-lookup-apis/bytemine/free/llms.txt)
- [Bytemine: LinkedIn people search API pricing, 8 plans](https://datacircle.dev/linkedin-people-search-apis/bytemine/free/llms.txt)
- [Bytemine: LinkedIn post search API pricing, 8 plans](https://datacircle.dev/linkedin-post-search-apis/bytemine/free/llms.txt)
- [Bytemine: cached people enrichment API pricing, 6 plans](https://datacircle.dev/cached-person-enrichment-apis/bytemine/free/llms.txt)
- [Bytemine: people enrichment API pricing, 8 plans](https://datacircle.dev/person-enrichment-apis/bytemine/free/llms.txt)
- [Bytemine: cached LinkedIn profile API pricing, 8 plans, POST /v1/enrich/linkedin](https://datacircle.dev/cached-linkedin-profile-apis/bytemine/free/llms.txt)
- [Bytemine: cached LinkedIn profile API pricing, 8 plans, POST /v1/enrich/linkedin-profile](https://datacircle.dev/cached-linkedin-profile-apis/bytemine/free-post-v1-enrich-linkedin-profile/llms.txt)
- [Bytemine: email verification API pricing, 8 plans, POST /fraud-check](https://datacircle.dev/validate-email-apis/bytemine/free-post-fraud-check/llms.txt)

## Bytemine: email verification API alternatives

- [Tomba, $4,968 pack, Scale 600k, GET /email-verifier, Email Verifier](https://datacircle.dev/validate-email-apis/tomba/4968-pack/llms.txt): $8.28 per 1,000, 50% complete, live
- [Databar, $995 monthly](https://datacircle.dev/validate-email-apis/databar/995-monthly/llms.txt): $8.292 per 1,000, 67% complete, live
- [lemlist, $833 monthly](https://datacircle.dev/validate-email-apis/lemlist/833-monthly/llms.txt): $8.33 per 1,000, 33% complete, live
- [Scrupp, $169 monthly](https://datacircle.dev/validate-email-apis/scrupp/169-monthly/llms.txt): $8.45 per 1,000, 33% 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 2026-10-28.

- https://app.bytemine.ai/api-reference
- https://app.bytemine.ai/assets/index-Qgw78CwK.js
- https://bytemine.ai
- https://www.bytemine.ai/developers
- https://www.bytemine.ai/openapi.json
- https://www.bytemine.ai/pricing
- https://www.bytemine.ai/terms