# UserCheck, free: Cached email verification API

> Check new signups, existing users, and imported lists with one API call that returns every signal you need, including disposable email detection that catches domains public blocklists miss.

UserCheck's cached 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: Address, Deliverability, Company.
The cheapest of the 344 priced plans is [StableEnrich, pay as you go](https://datacircle.dev/cached-email-validation-apis/stableenrich/pay-as-you-go/llms.txt), at $0.005 per 1,000.

- This page: https://datacircle.dev/cached-email-validation-apis/usercheck/free
- Get it: https://www.usercheck.com/#pricing
- Its API docs: https://www.usercheck.com/docs/api/email-endpoint
- Sold by: UserCheck (https://www.usercheck.com)
- Checked: 2026-10-23

## In the answer

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

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Also pays for: from the same budget: Domain lookup · Gates decision

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Check new signups, existing users, and imported lists with one API call that returns every signal you need, including disposable email detection that catches domains public blocklists miss.

## Data

- Freshness: stored
- Keep data: no limit
- Use data: You may not use our Services: For unlawful purposes, To support spam or fraud, To damage or impair our services, In violation of any applicable laws. You may not resell, sublicense, share, or redistribute UserCheck data or API results to third parties without our written agreement. This includes incorporating our data into products or services used by others.

## Plan

- Pay: $0
- You get: 1,000 credits a month
- Enough for: 1,000 calls a month
- Expires: at the start of each billing cycle, unused credits do not roll over

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: include_mx
- Method: GET
- Path: /email/{email}

## About the plan

- Plan: Free
- Who can get it: anyone aged 16 or over, or the age of consent in their jurisdiction

## The 18 fields the plan's answer can hold

status code, email address, normalized email address, domain, domain age in days, has MX records, MX records, MX providers, SPF posture, DMARC policy, disposable, public domain, relay domain, free subdomain, alias, role account, spam, did you mean

## UserCheck's plans (6)

- [UserCheck, free](https://datacircle.dev/cached-email-validation-apis/usercheck/free/llms.txt): $0.00 per 1,000, 50% complete, stored
- [UserCheck, $50 monthly](https://datacircle.dev/cached-email-validation-apis/usercheck/50-monthly/llms.txt): $0.25 per 1,000, 50% complete, stored
- [UserCheck, $100 monthly](https://datacircle.dev/cached-email-validation-apis/usercheck/100-monthly/llms.txt): $0.20 per 1,000, 50% complete, stored
- [UserCheck, $250 monthly](https://datacircle.dev/cached-email-validation-apis/usercheck/250-monthly/llms.txt): $0.167 per 1,000, 50% complete, stored
- [UserCheck, $500 monthly](https://datacircle.dev/cached-email-validation-apis/usercheck/500-monthly/llms.txt): $0.143 per 1,000, 50% complete, stored
- [UserCheck, contact us](https://datacircle.dev/cached-email-validation-apis/usercheck/contact-us/llms.txt): 50% complete, stored

## UserCheck's calls (1)

- `GET /email/{email}`: [UserCheck, free](https://datacircle.dev/cached-email-validation-apis/usercheck/free/llms.txt)

## UserCheck's APIs (1)

- [UserCheck: cached email verification API pricing, 6 plans](https://datacircle.dev/cached-email-validation-apis/usercheck/free/llms.txt)

## UserCheck: cached email verification API alternatives

- [EmailDetective, free, Free, POST /emails](https://datacircle.dev/cached-email-validation-apis/emaildetective/free-free-post-emails/llms.txt): $0.00 per 1,000, 83% complete, stored
- [Emailit, free](https://datacircle.dev/cached-email-validation-apis/emailit/free/llms.txt): $0.00 per 1,000, 67% complete, stored (has MX records: live)
- [APIVerve, free](https://datacircle.dev/cached-email-validation-apis/apiverve/free/llms.txt): $0.00 per 1,000, 50% complete, stored (MX valid, MX record, null MX, can receive mail, has SPF, has DMARC: live)
- [Botoi, free, Free, POST /v1/disposable-email/check](https://datacircle.dev/cached-email-validation-apis/botoi/free-free-post-v1-disposable-email-check/llms.txt): $0.00 per 1,000, 50% complete, stored
- [Sweep Emails, free](https://datacircle.dev/cached-email-validation-apis/sweep-emails/free/llms.txt): $0.00 per 1,000, 33% 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://www.usercheck.com/
- https://www.usercheck.com/docs/api/authentication.md
- https://www.usercheck.com/docs/api/email-endpoint.md
- https://www.usercheck.com/docs/api/rate-limits.md
- https://www.usercheck.com/docs/get-started/credits.md
- https://www.usercheck.com/legal/terms.md