# EmailZeno, free, POST /v1/verify/bulk: Email verification API

> Don't burn your sender reputation. Catch dead, invalid, and risky addresses before your ESP starts throttling you.

EmailZeno's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns none of the 6 key fields we check: Address, Deliverability, Confidence, Name and 2 more.
We rank 3,227 plans by price. [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 our benchmark.

- This page: https://datacircle.dev/validate-email-apis/emailzeno/free-post-v1-verify-bulk
- [Best email verification API in 2026: providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://emailzeno.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://app.emailzeno.com/api/v1/verify/bulk`
- API key: with the plan, on https://emailzeno.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://emailzeno.com/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#bulk-verify
- Sold by: EmailZeno (https://emailzeno.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 0%

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Verify a single email

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Bounce

- Bounce refund: the credit, automatically, when an address marked deliverable hard-bounces within 7 days of verification

## In their words

- Their pitch: Don't burn your sender reputation. Catch dead, invalid, and risky addresses before your ESP starts throttling you.

## 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 service to verify addresses you do not have a legitimate business reason to contact, use the service to support unsolicited bulk email (spam) campaigns, resell raw API access without prior written consent, probe addresses to harvest, enumerate, or guess valid mailboxes, reverse engineer, scrape, or attempt to overload the service

## Plan

- Pay: $0
- You get: 1,000 credits a month
- Enough for: 1,000 results a month
- Expires: at the end of each month, free-tier credits do not roll over

## Rate limit

- Per second: 0.17
- Batch: 1,000

## Speed

- Answer: by polling or webhook

## The call

- You send: emails, Content-Type header "application/json". Optional: deep_probe
- Method: POST
- Path: /v1/verify/bulk

## About the plan

- Plan: Free
- Who can get it: anyone

## The 5 fields the plan's answer can hold

job ID, email count, job status, message, credits used

## EmailZeno's plans (10)

- [EmailZeno, free, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/free-post-v1-verify-bulk/llms.txt): $0.00 per 1,000, 0% complete, live
- [EmailZeno, $49 pack, 10,000 Credits, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/49-pack-10000-credits-post-v1-verify-bulk/llms.txt): $4.90 per 1,000, 0% complete, live
- [EmailZeno, $119 pack, 50,000 Credits, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/119-pack-50000-credits-post-v1-verify-bulk/llms.txt): $2.38 per 1,000, 0% complete, live
- [EmailZeno, $179 pack, 100,000 Credits, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/179-pack-100000-credits-post-v1-verify-bulk/llms.txt): $1.79 per 1,000, 0% complete, live
- [EmailZeno, $625 pack, 500,000 Credits, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/625-pack-500000-credits-post-v1-verify-bulk/llms.txt): $1.25 per 1,000, 0% complete, live
- [EmailZeno, $999 pack, 1,000,000 Credits, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/999-pack-1000000-credits-post-v1-verify-bulk/llms.txt): $0.999 per 1,000, 0% complete, live
- [EmailZeno, $14 monthly, Normal, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/14-monthly-normal-post-v1-verify-bulk/llms.txt): $0.14 per 1,000, 0% complete, live
- [EmailZeno, $42 monthly, Unlimited, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/42-monthly-unlimited-post-v1-verify-bulk/llms.txt): $0.028 per 1,000, 0% complete, live
- [EmailZeno, $132 yearly, Normal, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/132-yearly-normal-post-v1-verify-bulk/llms.txt): $0.11 per 1,000, 0% complete, live
- [EmailZeno, $420 yearly, Unlimited, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/420-yearly-unlimited-post-v1-verify-bulk/llms.txt): $0.023 per 1,000, 0% complete, live

## EmailZeno's calls (2)

- `POST /v1/verify/bulk`: [EmailZeno, free, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/free-post-v1-verify-bulk/llms.txt)
- `POST /v1/verify`: [EmailZeno, free, POST /v1/verify](https://datacircle.dev/validate-email-apis/emailzeno/free-post-v1-verify/llms.txt)

## EmailZeno's APIs (1)

- [EmailZeno: email verification API pricing, 10 plans, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/emailzeno/free-post-v1-verify-bulk/llms.txt)

## EmailZeno: email verification API alternatives

- [treg, top-up from $200](https://datacircle.dev/validate-email-apis/treg/top-up-from-200/llms.txt): $0.00 per 1,000, 33% complete, live
- [MailTester Ninja, $23.99 monthly](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt): $0.008 per 1,000, 50% complete, live
- [GMass, $59.95 monthly](https://datacircle.dev/validate-email-apis/gmass/59-95-monthly/llms.txt): $0.017 per 1,000, 33% complete, live
- [Leadloadz, $29 monthly](https://datacircle.dev/validate-email-apis/leadloadz/29-monthly/llms.txt): $0.034 per 1,000, 50% 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://emailzeno.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://emailzeno.com/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://emailzeno.com/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://emailzeno.com/openapi.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://emailzeno.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing