# UnwrapEmail, free, POST /emails/bulk: Email verification API

> Sub-100ms validation with domain and risk signals for signup, CRM, and outbound workflows

UnwrapEmail'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, Name, Company.
We haven't run UnwrapEmail 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/unwrapemail/free-post-emails-bulk
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://unwrap.email/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- Request: `POST https://api.unwrap.email/v1/emails/bulk`
- API key: with the plan, on https://unwrap.email/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- Its API docs: https://docs.unwrap.email/api-reference/operations/createbulkvalidation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: UnwrapEmail (https://unwrap.email?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 67%
- Address: ✓
- Deliverability: ✓
- Name: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Validate Email Address

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Sub-100ms validation with domain and risk signals for signup, CRM, and outbound workflows

## Data

- What it checks: mail servers, disposable domains, role addresses
- Keep data: no limit
- Use data: You agree not to use the Service for any unlawful or unauthorized purpose, including but not limited to violating any applicable laws or regulations

## Plan

- Pay: $0
- You get: 1,000 requests a month
- Enough for: 1,000 results a month

## Rate limit

- Batch: 10,000

## Speed

- Answer: by polling

## The call

- You send: emails, Content-Type header "application/json". Optional: validate_domain, Idempotency-Key header
- Method: POST
- Path: /emails/bulk

## About the plan

- Plan: Free
- Who can get it: anyone

## The 57 fields the plan's answer can hold

operation ID, email address, first name, last name, normalized email address, SMTP provider, disposable, has label, subdomain, valid MX records, domain expired, domain expiring soon, domain transfer locked, domain update locked, domain delete locked, domain on registry hold, domain pending create, domain pending delete, domain pending transfer, domain pending update, domain registry reserved, domain parking nameserver, domain deliverable, no-reply address, role address, irregular pattern, uncommon Unicode, safe to send, username, normalized username, email label, MX records, domain age, root domain, domain, disposable sources, registry provider, registry provider link, registration date, expiration date, registry last changed, registry last checked, days until expiration, registrar name, registrar IANA ID, abuse email, abuse phone, has abuse contact, EPP statuses, DNSSEC signed, DNSSEC DS records count, DNSSEC DS records, nameservers, nameserver count, registry terms URL, ICANN EPP info URL, ICANN WICF URL

## UnwrapEmail's plans (3)

- [UnwrapEmail, free, POST /emails/bulk](https://datacircle.dev/validate-email-apis/unwrapemail/free-post-emails-bulk/llms.txt): $0.00 per 1,000, 67% complete
- [UnwrapEmail, pay as you go, 50,001+ validations, POST /emails/bulk](https://datacircle.dev/validate-email-apis/unwrapemail/pay-as-you-go-50001-validations-post-emails-bulk/llms.txt): $1.00 per 1,000, 67% complete
- [UnwrapEmail, $25 monthly, 1,001 to 50,000 validations, POST /emails/bulk](https://datacircle.dev/validate-email-apis/unwrapemail/25-monthly-1001-to-50000-validations-post-emails-bulk/llms.txt): $0.50 per 1,000, 67% complete

## UnwrapEmail's calls (2)

- `POST /emails/bulk`: [UnwrapEmail, free, POST /emails/bulk](https://datacircle.dev/validate-email-apis/unwrapemail/free-post-emails-bulk/llms.txt)
- `GET /emails/validate`: [UnwrapEmail, free, GET /emails/validate](https://datacircle.dev/validate-email-apis/unwrapemail/free-get-emails-validate/llms.txt)

## UnwrapEmail's APIs (1)

- [UnwrapEmail: email verification API pricing, 3 plans, POST /emails/bulk](https://datacircle.dev/validate-email-apis/unwrapemail/free-post-emails-bulk/llms.txt)

## UnwrapEmail: email verification API alternatives

- [Sealch, $25 monthly, Monthly up to 50,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/25-monthly-monthly-up-to-50000-mo-post-api-verify/llms.txt): $0.50 per 1,000, 17% complete, live
- [Verimail, $500 pack](https://datacircle.dev/validate-email-apis/verimail/500-pack/llms.txt): $0.50 per 1,000, 50% complete, live
- [Easy Email Verification, $1,200 monthly, Monthly subscription, 80,000 emails a day, POST /bulk/upload](https://datacircle.dev/validate-email-apis/easy-email-verification/1200-monthly-monthly-subscription-80000-emails-a-day-post-bulk-upload/llms.txt): $0.50 per 1,000, 50% complete, live
- [NullBounce, $500 pack](https://datacircle.dev/validate-email-apis/nullbounce/500-pack/llms.txt): $0.50 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 2026-11-02.

- https://docs.unwrap.email/api-reference/operations/createbulkvalidation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.unwrap.email/api-reference/operations/validateemail?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.unwrap.email/getting-started/activate-subscription?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.unwrap.email/guides/bulk-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://unwrap.email/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://unwrap.email/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing