# CleanSignUps, free: Email verification API

> Verify email addresses in real time, block disposable emails, improve deliverability, and prevent fake signups with the CleanSignUps Email Verification API.

CleanSignUps's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 4 of the 6 key fields we check: Address, Deliverability, Confidence, Company.
We haven't run CleanSignUps through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 3,753 plans for email verification APIs by price. Half the plans cost $1.98 per 1,000 emails or less.
[treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) is the cheapest paid plan per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $68.365 per 1,000 emails when no provider answers.
[Disify's $9 monthly plan (/email)](https://datacircle.dev/validate-email-apis/disify/9-monthly-starter-post-email/llms.txt) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.
[MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt), [Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/499-monthly/llms.txt) and [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/cleansignups/free
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://www.cleansignups.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.cleansignups.com/api/dashboard/verify`
- API key: with the plan, on https://www.cleansignups.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://www.cleansignups.com/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: CleanSignUps (https://www.cleansignups.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 67%
- Address: ✓
- 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: Bulk Verification

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Verify email addresses in real time, block disposable emails, improve deliverability, and prevent fake signups with the CleanSignUps Email Verification API.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: You agree not to use the Services for any unlawful purpose or in any way that violates these Terms. Prohibited uses include: Spam: You will not use the results of the Services to send unsolicited bulk commercial emails (spam). Abuse: You will not use the Services to verify email addresses obtained unlawfully or without the consent of the email owner. Harmful Activity: You will not upload any content that is harmful, threatening, abusive, harassing, defamatory, or obscene. System Integrity: You will not attempt to gain unauthorized access to the Services, or interfere with the integrity or performance of the Services.

## Plan

- Pay: $0
- You get: 50 credits a month
- Enough for: 50 calls a month
- Expires: reset each billing cycle

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: POST
- Path: /api/dashboard/verify

## About the plan

- Plan: Free
- Who can get it: anyone

## The 35 fields the plan's answer can hold

email address, domain, valid, disposable, suspicious, role, quality score, risks, blocked, no-reply, status, sub-status, SMTP provider, MX found, MX record, syntax valid, SPF, DMARC, free, spam trap, gibberish, blacklisted, blacklist name, did you mean, domain age, SMTP quality score, greylisted, can receive email, port 25 status, port 25 can receive, port 25 reason, mailbox exists, credits used, credit limit, credits remaining

## CleanSignUps's plans (15)

- [CleanSignUps, free](https://datacircle.dev/validate-email-apis/cleansignups/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [CleanSignUps, $19 pack](https://datacircle.dev/validate-email-apis/cleansignups/19-pack/llms.txt): $3.80 per 1,000, 67% complete, live
- [CleanSignUps, $25 pack](https://datacircle.dev/validate-email-apis/cleansignups/25-pack/llms.txt): $5.00 per 1,000, 67% complete, live
- [CleanSignUps, $29 pack](https://datacircle.dev/validate-email-apis/cleansignups/29-pack/llms.txt): $2.90 per 1,000, 67% complete, live
- [CleanSignUps, $59 pack](https://datacircle.dev/validate-email-apis/cleansignups/59-pack/llms.txt): $2.36 per 1,000, 67% complete, live
- [CleanSignUps, $109 pack](https://datacircle.dev/validate-email-apis/cleansignups/109-pack/llms.txt): $2.18 per 1,000, 67% complete, live
- [CleanSignUps, $189 pack](https://datacircle.dev/validate-email-apis/cleansignups/189-pack/llms.txt): $1.89 per 1,000, 67% complete, live
- [CleanSignUps, $7.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/7-99-monthly/llms.txt): $7.99 per 1,000, 67% complete, live
- [CleanSignUps, $17.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/17-99-monthly/llms.txt): $3.598 per 1,000, 67% complete, live
- [CleanSignUps, $29.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/29-99-monthly/llms.txt): $2.999 per 1,000, 67% complete, live
- [CleanSignUps, $79.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/79-99-monthly/llms.txt): $3.20 per 1,000, 67% complete, live
- [CleanSignUps, $129.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/129-99-monthly/llms.txt): $2.60 per 1,000, 67% complete, live
- [CleanSignUps, $199.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/199-99-monthly/llms.txt): $1.9999 per 1,000, 67% complete, live
- [CleanSignUps, $599.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/599-99-monthly/llms.txt): $1.20 per 1,000, 67% complete, live
- [CleanSignUps, $799.99 monthly](https://datacircle.dev/validate-email-apis/cleansignups/799-99-monthly/llms.txt): $0.80 per 1,000, 67% complete, live

## CleanSignUps's calls (1)

- `POST /api/dashboard/verify`: [CleanSignUps, free](https://datacircle.dev/validate-email-apis/cleansignups/free/llms.txt)

## CleanSignUps's APIs (1)

- [CleanSignUps: email verification API pricing, 15 plans](https://datacircle.dev/validate-email-apis/cleansignups/free/llms.txt)

## CleanSignUps: email verification API alternatives

- [BillionVerify, $80 pack, Professional, POST /verify/bulk](https://datacircle.dev/validate-email-apis/billionverify/80-pack-professional-post-verify-bulk/llms.txt): $0.80 per 1,000, 67% complete, live
- [Verimail, $200 pack](https://datacircle.dev/validate-email-apis/verimail/200-pack/llms.txt): $0.80 per 1,000, 50% complete, live
- [validTo, $200 monthly, 250,000 Verifications (Monthly), GET /verify](https://datacircle.dev/validate-email-apis/validto/200-monthly-250000-verifications-monthly-get-verify/llms.txt): $0.80 per 1,000, 50% complete, live
- [Zuhal, $20 monthly, Monthly: 25,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/20-monthly-monthly-25000-credits-post-bulk-upload/llms.txt): $0.80 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 2026-11-05.

- https://www.cleansignups.com/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.cleansignups.com/api/credit-packs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.cleansignups.com/api/packages?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.cleansignups.com/email-verification-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.cleansignups.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.cleansignups.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing