Email verification API

Real-Time Email Verification API

Q: How does the API verify an email?

The API uses syntax, domain, MX, mailbox, disposable, role-based, accept-all, and related deliverability signals.

Q: Which fields are returned?

Responses include IsValid, Score, Email, State, Reason, Domain, Free, Role, Disposable, AcceptAll, Tag, MXRecord, RetryAfterSeconds when applicable, and EmailAdditionalInfo.

Q: Does verification send an email?

No. Email verification checks deliverability signals without sending a message to the address.

Validate email addresses during signup, checkout, lead capture, and data import using syntax, domain, MX, mailbox, disposable, role-based, and accept-all signals.

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Simple GET endpoint Real-time workflow Clear response fields One credit per verification

Request

curl "https://api.ValidEmail.net/?email=user@example.com&token=YOUR_API_KEY"

Response

{
  "IsValid": true,
  "Score": 95,
  "Email": "user@example.com",
  "State": "Deliverable",
  "Reason": "ACCEPTED EMAIL",
  "Domain": "example.com",
  "Free": false,
  "Role": false,
  "Disposable": false,
  "AcceptAll": false,
  "Tag": false,
  "MXRecord": "mx.example.com.",
  "RetryAfterSeconds": null,
  "EmailAdditionalInfo": []
}

Use cases

Verify emails where bad data enters your product.

Use ValidEmail in forms, imports, CRM workflows, and onboarding systems before invalid contacts create support, deliverability, or fraud costs.

Signup validation

Check addresses before account creation or email confirmation steps.

Checkout validation

Reduce order issues caused by typoed or temporary mailbox addresses.

Lead forms

Improve lead quality before sending records to sales or marketing tools.

CRM enrichment

Add score, state, reason, domain, and risk flags to contact records.

CSV imports

Validate imported addresses before they enter customer workflows.

Fraud reduction

Flag disposable, role-based, accept-all, and low-confidence addresses.

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Capabilities

Return the fields developers need for decisions.

Build simple rules with `IsValid`, `Score`, `State`, and `Reason`, then refine with disposable, role, accept-all, free-provider, domain, tag, and MX details.

Syntax and domain checks

Catch malformed emails and domain-level issues early.

MX and mailbox signals

Inspect mail-exchange and recipient-level deliverability signals.

Disposable detection

Identify temporary mailbox providers.

Role detection

Flag shared inboxes such as info, admin, support, and sales.

Accept-all detection

Know when a domain makes mailbox certainty limited.

Score and reason

Use numeric confidence plus a readable reason for routing logic.

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Integration examples

Start with cURL, then move to your stack.

Full language guides are available in the documentation. These compact examples show the production endpoint shape.

JavaScript / Node.js

const email = "user@example.com";
const token = "YOUR_API_KEY";
const url = `https://api.ValidEmail.net/?email=${encodeURIComponent(email)}&token=${token}`;
const response = await fetch(url);
const result = await response.json();
console.log(result.IsValid, result.Score, result.State);

Python

import requests

params = {"email": "user@example.com", "token": "YOUR_API_KEY"}
response = requests.get("https://api.ValidEmail.net/", params=params, timeout=15)
result = response.json()
print(result["IsValid"], result["Score"], result["State"])

C# Python PHP JavaScript Java Go Ruby Full API guide

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Performance and limits

Predictable API behavior for production workflows.

Authentication

Pass your API key as the `token` query parameter.

Rate limits

Limits are enforced per API key. A rate-limited request returns HTTP 429 with a readable error.

Timeouts

Client libraries should set a timeout and retry only when the failure is temporary.

Temporary SMTP outcomes

Some results can include `RetryAfterSeconds` when retrying later may produce a more final result.

Credits

A standard verification uses one credit. Requests without enough credits return an error.

Versioning

The current documented real-time endpoint is `https://api.ValidEmail.net/`, with a `/v2` route also present for newer API behavior.

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API pricing

Email verification API credits for production workflows.

Buy the credit package that matches your launch volume, then use the same credits for real-time API checks, bulk uploads, and integrations.

Credit math 1 credit = 1 email verification

Good for API checks, CSV uploads, and integrations

Credits never expire after purchase.

Credits

5,000

API verifications

Original price $9.50

$1.90

final price after discount

Save 80% You save $7.60

$0.00038 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

10,000

API verifications

Original price $15.00

$3.00

final price after discount

Save 80% You save $12.00

$0.0003 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

25,000

API verifications

Original price $35.25

$7.05

final price after discount

Save 80% You save $28.20

$0.000282 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

50,000

API verifications

Original price $61.25

$12.25

final price after discount

Save 80% You save $49.00

$0.000245 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

100,000

API verifications

$21.00

final price after discount

Save 80% You save $84.00

$0.00021 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

200,000

API verifications

Original price $210.00

$42.00

final price after discount

Save 80% You save $168.00

$0.00021 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

500,000

API verifications

Original price $500.00

$100.00

final price after discount

Save 80% You save $400.00

$0.0002 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

1,000,000

API verifications

Original price $1,000.00

$200.00

final price after discount

Save 80% You save $800.00

$0.0002 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

5,000,000

API verifications

Original price $4,500.00

$900.00

final price after discount

Save 80% You save $3,600.00

$0.00018 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

10,000,000

API verifications

Original price $8,000.00

$1,600.00

final price after discount

Save 80% You save $6,400.00

$0.00016 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

20,000,000

API verifications

Original price $10,000.00

$2,000.00

final price after discount

Save 80% You save $8,000.00

$0.0001 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Credits

40,000,000

API verifications

Original price $13,500.00

$2,700.00

final price after discount

Save 80% You save $10,800.00

$0.0000675 per credit after discount

Instant access to API credits
Use for API, bulk, or integrations
Credits never expire

Start verifying now

No subscription. No hidden fees.

Developer trust

Clear docs beat decorative badges.

Use the linked docs for endpoint examples, response fields, and implementation details. Contact support for account-specific limits or enterprise-volume needs.

Documentation

API guide, response reference, and language examples.

Error guidance

Handle invalid tokens, credit errors, rate limits, and temporary network failures explicitly.

Privacy information

Review the published Privacy Policy for data handling details.

Support channel

Reach ValidEmail through the contact page for implementation help.

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FAQ

Email Verification API questions.

How does the API verify an email?

It uses syntax, domain, MX, mailbox, disposable, role-based, accept-all, and related deliverability signals.

Which fields are returned?

IsValid, Score, Email, State, Reason, Domain, Free, Role, Disposable, AcceptAll, Tag, MXRecord, RetryAfterSeconds, and EmailAdditionalInfo.

What are the rate limits?

Rate limits are configured per API key. If a request is limited, the API returns HTTP 429.

How are timeouts handled?

Your client should set a timeout and retry temporary failures according to your product's tolerance.

How are temporary SMTP responses handled?

When applicable, `RetryAfterSeconds` can indicate when to re-query for a more final result, including temporary greylisting responses.

What does accept-all mean?

The domain accepts recipient checks broadly, so mailbox certainty is limited.

Does verification send an email?

No. The API checks deliverability signals without sending an email to the address.

How are credits charged?

A standard API verification uses one credit. View pricing for current packages and terms.

Is there a sandbox?

Use your account API key and a small test set. Contact support if you need a dedicated test arrangement.

Which languages are supported?

Any language that can send HTTPS requests. Docs include C#, Python, PHP, JavaScript, Java, Go, and Ruby.

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Add Email Verification to Your Application

Create an account, get your API key, and start validating signup, checkout, lead, and import workflows.

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