Professional Email Verification API with 99.9% Accuracy

Validate email addresses in real-time or clean millions of records with our fast, reliable, and affordable email verification service.

Get Started Free View API Docs

Why BillionVerify?

Multi-Layer Verification

Every email passes through our comprehensive verification stack:

• Syntax Validation - Catch formatting errors and typos
• Domain Verification - Confirm domain exists and is configured
• MX Record Check - Verify mail servers are active
• SMTP Verification - Validate specific mailbox existence
• AI-Powered Detection - Identify disposables, spam traps, and catch-all domains

REST API

Our REST API enables custom integrations with any platform. Simple HTTP requests, predictable JSON responses.

Quick Example

curl -X GET "https://api.billionverify.com/v1/verify?email=test@example.com" \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "email": "test@example.com",
  "is_valid": true,
  "is_disposable": false,
  "is_role_based": false,
  "is_catch_all": false,
  "mx_found": true,
  "smtp_check": true
}

Full API Reference →

Official SDKs

We provide official SDKs for popular programming languages. Each SDK includes single and bulk verification, credit management, webhook configuration, automatic retry logic, and rate limit handling.

Node.js / TypeScript

Full JavaScript and TypeScript support for Node.js applications.

npm install billionverify-sdk
# or
yarn add billionverify-sdk

import { BillionVerify } from 'billionverify-sdk';

const client = new BillionVerify('YOUR_API_KEY');
const result = await client.verify('test@example.com');

console.log(result.is_valid);

Node.js SDK Docs →

Python

Clean Pythonic interface for scripts and applications.

pip install billionverify

from billionverify import BillionVerify

client = BillionVerify('YOUR_API_KEY')
result = client.verify('test@example.com')

print(result.is_valid)

Python SDK Docs →

Go

Native Go SDK with goroutine concurrency support.

go get github.com/BillionVerify/billionverify-go

package main

import billionverify "github.com/BillionVerify/billionverify-go"

func main() {
    client, _ := billionverify.NewClient(billionverify.Config{APIKey: "YOUR_API_KEY"})
    result, _ := client.Verify("test@example.com")

    fmt.Println(result.IsValid)
}

Go SDK Docs →

PHP

PHP SDK with Laravel framework integration.

composer require billionverify/billionverify-php

<?php
use BillionVerify\Client;

$client = new Client('YOUR_API_KEY');
$result = $client->verify('test@example.com');

echo $result->isValid;

PHP SDK Docs →

Java

Java SDK supporting Spring Boot applications.

<dependency>
  <groupId>io.github.billionverifier</groupId>
  <artifactId>billionverify-java</artifactId>
  <version>1.0.0</version>
</dependency>

import com.billionverify.sdk.BillionVerifyClient;

BillionVerifyClient client = new BillionVerifyClient("YOUR_API_KEY");
VerificationResult result = client.verify("test@example.com");

System.out.println(result.isValid());

Java SDK Docs →

SDK Features

All SDKs include:

Pricing

Transparent credit-based pricing that scales with your needs.

50% off annual plans • Credits never expire • 100 free credits on signup

View All Plans →

Integrations

Native integrations with 25+ platforms:

Email Marketing: Mailchimp, SendGrid, Klaviyo, Brevo, Campaign Monitor

CRM: Salesforce, HubSpot, Pipedrive

Automation: Zapier, Make (Integromat)

Forms: Typeform, JotForm, Gravity Forms

Get Started

1. Sign Up - Create an account at billionverify.com
2. Get API Key - Find your key in the dashboard
3. Install SDK - Choose your language and install
4. Start Verifying - Make your first API call

100 free credits on signup. No credit card required.

Create Free Account →

Resources

• API Documentation
• SDK Reference
• Pricing
• Blog
• Support