# Email validation for lists, sign-up forms and apps

URL: https://email-validation.org/
Updated: 2026-10-20

> Documentation index: https://email-validation.org/llms.txt

email-validation.org checks whether an email address can receive mail before you send to it. Check one address below, upload a list of up to 1,000,000 rows, or call the API. Every result is deliverable, undeliverable, risky or unknown, with a reason and a recommended action, and unknown results are always free.

5 free checks a day without an account. Unknown results never cost a credit.

[Get 500 free credits](https://email-validation.org/signin/) [See pricing](https://email-validation.org/pricing/)

- 500/s API requests per second per account after your first purchase
- 15 s longest wait per check; slower checks are unknown and free
- 1,000,000 rows per bulk list (CSV, XLSX and TXT)
- 24 months before credits expire, for free and paid credits alike

## One address, a whole list, or your own app

The same checks, credits and result format everywhere.

- **[Check one address](https://email-validation.org/email-checker/)**: Paste an address and see its status, reason and recommended action. 5 free checks a day without an account. [Open the free email checker](https://email-validation.org/email-checker/)
- **[Clean a list](https://email-validation.org/bulk-email-verification/)**: Upload a CSV, XLSX or TXT file with up to 1,000,000 rows, follow progress and download the rows you want to keep. Files are deleted after 30 days. [How bulk verification works](https://email-validation.org/bulk-email-verification/)
- **[Call the API](https://email-validation.org/email-verification-api/)**: REST and JSON with an OpenAPI 3.1 spec, JavaScript/TypeScript and Python SDKs, webhooks and an MCP server for AI agents. [Explore the email verification API](https://email-validation.org/email-verification-api/)

## From syntax to mailbox in one request

No email is ever sent to the address you check.

1. **Syntax**: Text that can never be an email address is rejected before anything else runs. These answers are free.
2. **Domain and mail records**: The domain's DNS and MX records show whether it can receive mail at all, and where that mail goes.
3. **Mailbox**: The receiving mail server is asked whether the mailbox exists. If it stays silent for 15 seconds, the result is unknown and free.
4. **Result**: You get a status, a reason and a recommended action, plus flags for free, role, disposable and catch-all addresses.

## Four statuses, each with a reason

Every status comes with an action you can apply directly to your list. The [statuses and reasons guide](https://email-validation.org/docs/statuses/) explains each one.

- Deliverable The mailbox exists and accepted our check, so mail sent to it should arrive. 1 credit · Send [Deliverable reasons](https://email-validation.org/docs/statuses/deliverable/)
- Undeliverable Mail sent to this address will not arrive, so it should come off your list. 1 credit · Remove [Undeliverable reasons](https://email-validation.org/docs/statuses/undeliverable/)
- Risky The address may accept mail, but sending to it can hurt your bounce rate or sender reputation. 1 credit · Send with caution [Risky reasons](https://email-validation.org/docs/statuses/risky/)
- Unknown We could not get a definite answer this time, so no credit is used and a later retry often succeeds. Free, no credit used · Retry later [Unknown reasons](https://email-validation.org/docs/statuses/unknown/)

## Validate an address with one request

Send the address with your API key in the Authorization header. Read the [quickstart](https://email-validation.org/docs/quickstart/) or the [API reference](https://email-validation.org/docs/api-reference/).

Request

```bash
curl https://api.email-validation.org/v1/validate \
  -H "Authorization: Bearer $EV_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email": "jane.doe@example.com"}'
```

- [Code samples in curl, JavaScript, TypeScript, Python, PHP, Ruby, Go, Java, C# and Rust](https://email-validation.org/docs/code-samples/)
- [Official JavaScript/TypeScript and Python SDKs](https://email-validation.org/docs/sdks/)
- [MCP server for AI agents](https://email-validation.org/integrations/mcp/)
- [Free test addresses for your integration](https://email-validation.org/docs/test-addresses/)

## One-time packs, from $0.45 per 1,000

No subscription. Prices in USD, excluding tax. VAT or sales tax is added at checkout where applicable. Packs are sold for business use. [See all pricing details and the dated comparison](https://email-validation.org/pricing/).

| Pack | Price | Per 1,000 | Bonus (first 3 payments) | Per 1,000 with bonus |
| --- | --- | --- | --- | --- |
| 10,000 credits | $35 | $3.50 | +1,500 (11,500 total) | $3.04 |
| 25,000 credits | $49 | $1.96 | +3,750 (28,750 total) | $1.70 |
| 50,000 credits | $79 | $1.58 | +7,500 (57,500 total) | $1.37 |
| 1,000,000 credits | $450 | $0.45 | +150,000 (1,150,000 total) | $0.39 |

## Key facts

Checked Oct 20, 2026. Every number comes from our configuration, the same source the product uses.

- **Pricing**: 10,000 credits $35 · 25,000 credits $49 · 50,000 credits $79 · 1,000,000 credits $450 ($0.45 per 1,000 on the 1M pack). One-time packs, no subscription. 1 credit checks 1 address.
- **Tax**: Prices in USD, excluding tax. VAT or sales tax is added at checkout where applicable.
- **Bonus**: +15% bonus credits on each of the first 3 completed payments per customer, any payment method (card payments are also limited to 3 bonuses per card).
- **Free credits**: 500 credits on sign-up, no card needed.
- **Never charged**: Unknown results, checks that pass the 15-second limit, API errors, malformed addresses and test addresses.
- **Expiry**: Credits expire 24 months after they are granted (free, bonus and purchased credits). We spend the soonest-expiring credits first.
- **Refunds**: None. This does not affect any statutory rights you may have.
- **API**: Up to 500 requests per second per account once you have made a purchase (20 per second before). Each check waits at most 15 seconds.
- **Bulk**: CSV, XLSX or TXT files up to 1,000,000 rows. Files are deleted 30 days after upload.
- **Statuses**: Deliverable, undeliverable, risky and unknown. Unknown is always free.
- **Developers**: OpenAPI 3.1, JavaScript/TypeScript and Python SDKs, webhooks, MCP server.
- **Free checker**: 5 free checks a day on the email checker, no account needed.

## Start with 500 free credits

Test the checks on your own list before you buy. No card needed. Unknown results never cost a credit.

[Get 500 free credits](https://email-validation.org/signin/) [Read the docs](https://email-validation.org/docs/)

## Frequently asked questions

**What is email-validation.org?**

A pay-as-you-go email validation service. You can check one address, upload a list of up to 1,000,000 rows (CSV, XLSX or TXT), or call the REST API. Each result says whether the address is deliverable, undeliverable, risky or unknown, with a reason and a recommended action. It is a commercial service run by Inbox Perfection LLC.

**How much does it cost?**

Credits come in one-time packs: 10,000 for $35 ($3.50 per 1,000), 25,000 for $49 ($1.96 per 1,000), 50,000 for $79 ($1.58 per 1,000) and 1,000,000 for $450 ($0.45 per 1,000). One credit checks one address. There is no subscription. Prices in USD, excluding tax. VAT or sales tax is added at checkout where applicable.

**Is there a free trial?**

Every new account gets 500 free credits with no card needed. The email checker page also gives 5 free single checks a day without an account.

**Am I charged for unknown results?**

No. Any result with the status unknown is free. That includes checks where the receiving mail server does not answer within 15 seconds. Requests that fail with an error, malformed addresses and test addresses are free too.

**Do credits expire?**

Yes. Every credit expires 24 months after it was added to your account, whether it was free, bonus or purchased. We always spend the credits that expire soonest first.

**Do you offer refunds?**

No. Credit purchases are final. Because unknown results and errors are never charged, you pay only for checks that return a definite result. This does not affect any statutory rights you may have.