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title BillionVerify - Email Verification API & SDKs

BillionVerify.com

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{: .btn} View API Docs{: .btn}

Why BillionVerify?

Feature BillionVerify
Accuracy 99.9% verification accuracy
Speed Sub-300ms response time
Throughput 50,000 emails/hour bulk processing
Pricing Starting at $0.0003/email

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:

Feature Description
Single Verification Verify individual emails in real-time
Bulk Verification Process large lists efficiently
Credit Management Check balance, purchase credits
Webhooks Configure notification endpoints
Error Handling Comprehensive exception handling
Auto Retry Automatic retry on transient failures
Rate Limiting Built-in rate limit handling
Timeouts Customizable request timeouts

Pricing

Transparent credit-based pricing that scales with your needs.

Plan Monthly Credits Per Email
Starter $4 1,000 $0.004
Popular $16 5,000 $0.0032
Professional $28 10,000 $0.0028
Business $48 20,000 $0.0024
Enterprise $60 50,000 $0.0012
Premium $80 100,000 $0.0008

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