# Zuhal, free, POST /bulk/upload: Email verification API

> Verify single emails in real-time or process millions in bulk. Clean JSON responses, credits-based pricing, and 99.9% uptime

Zuhal's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 2 of the 6 key fields we check: Address, Deliverability.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), Zuhal's best plan scores 54.3 out of 100.
This plan is free. We rank 3,341 plans for email verification APIs by price. Half the plans cost $1.985 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/zuhal/free-post-bulk-upload
- [Email validation API: 160+ providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://zuhal.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://zuhal.io/api/v1/bulk/upload`
- API key: with the plan, on https://zuhal.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://zuhal.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Zuhal (https://zuhal.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 33%
- Address: ✓
- Deliverability: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: 30 days
- Also pays for: from the same budget: Single Verification

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Verify single emails in real-time or process millions in bulk. Clean JSON responses, credits-based pricing, and 99.9% uptime

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, mailbox
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 results

## Rate limit

- Per second: 0.42
- Concurrent: 10

## Speed

- Answer: by polling

## The call

- You send: file. Optional: name
- Method: POST
- Path: /bulk/upload

## About the plan

- Plan: Free
- Who can get it: anyone at least 18 years old

## The 20 fields the plan's answer can hold

request status, message, job ID, job status, total records, credits used, remaining credits, total emails, emails completed, valid count, invalid count, disposable count, catch-all count, unknown count, percentage complete, started at, last updated at, download link, email address, email status

## Zuhal's plans (15)

- [Zuhal, free, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/free-post-bulk-upload/llms.txt): $0.00 per 1,000, 33% complete, live
- [Zuhal, $13 pack, Pay As You Go: 10,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/13-pack-pay-as-you-go-10000-credits-post-bulk-upload/llms.txt): $1.30 per 1,000, 33% complete, live
- [Zuhal, $32 pack, Pay As You Go: 25,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/32-pack-pay-as-you-go-25000-credits-post-bulk-upload/llms.txt): $1.28 per 1,000, 33% complete, live
- [Zuhal, $44 pack, Pay As You Go: 50,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/44-pack-pay-as-you-go-50000-credits-post-bulk-upload/llms.txt): $0.88 per 1,000, 33% complete, live
- [Zuhal, $75 pack, Pay As You Go: 100,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/75-pack-pay-as-you-go-100000-credits-post-bulk-upload/llms.txt): $0.75 per 1,000, 33% complete, live
- [Zuhal, $150 pack, Pay As You Go: 250,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/150-pack-pay-as-you-go-250000-credits-post-bulk-upload/llms.txt): $0.60 per 1,000, 33% complete, live
- [Zuhal, $240 pack, Pay As You Go: 500,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/240-pack-pay-as-you-go-500000-credits-post-bulk-upload/llms.txt): $0.48 per 1,000, 33% complete, live
- [Zuhal, $400 pack, Pay As You Go: 1,000,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/400-pack-pay-as-you-go-1000000-credits-post-bulk-upload/llms.txt): $0.40 per 1,000, 33% complete, live
- [Zuhal, $10 monthly, Monthly: 10,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/10-monthly-monthly-10000-credits-post-bulk-upload/llms.txt): $1.00 per 1,000, 33% 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
- [Zuhal, $35 monthly, Monthly: 50,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/35-monthly-monthly-50000-credits-post-bulk-upload/llms.txt): $0.70 per 1,000, 33% complete, live
- [Zuhal, $60 monthly, Monthly: 100,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/60-monthly-monthly-100000-credits-post-bulk-upload/llms.txt): $0.60 per 1,000, 33% complete, live
- [Zuhal, $125 monthly, Monthly: 250,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/125-monthly-monthly-250000-credits-post-bulk-upload/llms.txt): $0.50 per 1,000, 33% complete, live
- [Zuhal, $200 monthly, Monthly: 500,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/200-monthly-monthly-500000-credits-post-bulk-upload/llms.txt): $0.40 per 1,000, 33% complete, live
- [Zuhal, $350 monthly, Monthly: 1,000,000 Credits, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/350-monthly-monthly-1000000-credits-post-bulk-upload/llms.txt): $0.35 per 1,000, 33% complete, live

## Zuhal's calls (2)

- `POST /bulk/upload`: [Zuhal, free, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/free-post-bulk-upload/llms.txt)
- `POST /verify`: [Zuhal, free, POST /verify](https://datacircle.dev/validate-email-apis/zuhal/free-post-verify/llms.txt)

## Zuhal's APIs (1)

- [Zuhal: email verification API pricing, 15 plans, POST /bulk/upload](https://datacircle.dev/validate-email-apis/zuhal/free-post-bulk-upload/llms.txt)

## Zuhal: email verification API alternatives

- [MillionVerifier, $1,399 pack, 4,000,000 verification credits, GET /api/v3](https://datacircle.dev/validate-email-apis/millionverifier/1399-pack-4000000-verification-credits-get-api-v3/llms.txt): $0.35 per 1,000, 50% complete, live
- [BillionVerify, $350 pack, Ultimate, POST /verify/bulk](https://datacircle.dev/validate-email-apis/billionverify/350-pack-ultimate-post-verify-bulk/llms.txt): $0.35 per 1,000, 67% complete, live
- [Listclean, $35 pack, 100K Credits, GET /verify/email/{email}](https://datacircle.dev/validate-email-apis/listclean/35-pack-100k-credits-get-verify-email-email/llms.txt): $0.35 per 1,000, 33% complete, live
- [VerifyHQ, $350 pack](https://datacircle.dev/validate-email-apis/verifyhq/350-pack/llms.txt): $0.35 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://zuhal.io/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://zuhal.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://zuhal.io/faqs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://zuhal.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://zuhal.io/refund-policy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://zuhal.io/terms-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing