BillionVerify FAQs

BillionVerify is a professional email verification API service that helps businesses validate email addresses in real-time. Our service checks email syntax, domain validity, MX records, and SMTP connections to ensure 99.9% accuracy. BillionVerify prevents bounced emails, improves deliverability rates, and protects your sender reputation by detecting disposable emails, role-based addresses, and catch-all domains.

BillionVerify uses a multi-step verification process: First, we validate the email syntax and format. Second, we verify the domain exists and has valid MX records. Third, we perform SMTP verification to confirm the mailbox exists without sending an actual email. Finally, we check against our database of known disposable email providers, role-based addresses, and other risk factors. This comprehensive process ensures accurate results within milliseconds.

BillionVerify can detect and classify multiple email types including: valid deliverable emails, invalid or non-existent addresses, disposable/temporary emails (like 10minutemail), role-based emails (info@, support@, admin@), catch-all domains that accept any email address, free email providers (Gmail, Yahoo, Outlook), and potentially risky or fraudulent email addresses. This comprehensive detection helps you maintain a clean, high-quality email list.

Getting started with BillionVerify is simple: 1) Sign up for a free account at billionverify.com - no credit card required. 2) You'll receive 10 free credits instantly to test our service. 3) Access your API key from the dashboard. 4) Integrate our API using our comprehensive documentation or SDKs for Node.js, Python, PHP, and more. 5) Start verifying emails immediately with our RESTful API or bulk upload feature.

Yes! BillionVerify offers 10 free email verification credits when you sign up - no credit card required. Additionally, you can test our service without signing up using our homepage demo (limited to 5 verifications per hour for anonymous users). This allows you to experience our 99.9% accuracy rate and millisecond response times before committing to a paid plan.

BillionVerify uses a credit-based system where 1 credit = 1 email verification. Credits never expire and can be used anytime. You can purchase credits in packages starting from 1,000 credits, with volume discounts available. Each verification consumes one credit regardless of the result (valid, invalid, or unknown). Bulk verifications also use one credit per email. Check your remaining credits anytime in your dashboard.

When your credits reach zero, API requests will return an "insufficient credits" error, and bulk verifications will be paused. You'll receive email notifications at 20% and 5% remaining credits. To continue verifying emails, simply purchase more credits from your dashboard. There's no subscription required - buy credits as needed. For high-volume users, we offer auto-recharge options and custom enterprise plans.

BillionVerify credits are non-refundable once purchased, but they never expire - use them whenever you need. We offer this policy because you can test our service with free credits before purchasing. If you experience technical issues that prevent you from using credits, our support team will work with you to resolve the problem or provide appropriate compensation.

BillionVerify API rate limits depend on your account type: Free accounts - 60 requests per minute; Starter plans - 300 requests per minute; Professional plans - 600 requests per minute; Enterprise plans - custom limits up to 10,000+ requests per minute. Rate limit information is included in API response headers. For bulk verification, you can upload files with up to 1 million emails.

BillionVerify provides a RESTful API that works with any programming language. We offer official SDKs for popular languages including Node.js/JavaScript, Python, PHP, Ruby, Go, and Java. Our API uses standard HTTP methods and returns JSON responses, making it easy to integrate with any modern application. Check our documentation for code examples in multiple languages.

Yes! BillionVerify supports bulk email verification through two methods: 1) Batch API endpoint - verify up to 1,000 emails per request programmatically. 2) File upload - upload CSV or TXT files containing up to 1 million emails through the dashboard. Bulk verifications are processed asynchronously, and you'll receive a webhook notification or can poll for results. Processing speed is approximately 100,000 emails per hour.

Yes, BillionVerify is fully GDPR compliant and prioritizes data security. We use 256-bit SSL encryption for all API communications, store data in encrypted databases, and never store email content - only verification results. We don't share your data with third parties, and you can request data deletion anytime. Our infrastructure is SOC 2 compliant and undergoes regular security audits.

BillionVerify achieves 99.9% accuracy through our comprehensive verification process. We continuously update our algorithms and maintain extensive databases of email providers, disposable domains, and validation rules. Our accuracy is measured against real-world bounce rates and validated through millions of verifications. For catch-all domains where definitive verification isn't possible, we provide confidence scores.

BillionVerify works with virtually all email providers worldwide, including major providers like Gmail, Outlook, Yahoo, and thousands of corporate and regional email services. We support international domains and non-Latin characters (IDN). Some providers with strict security may limit SMTP verification, in which case we use alternative validation methods and provide appropriate status codes.

BillionVerify provides multiple support channels: Email support for all users at support@billionverify.com (response within 24 hours); Priority support for Professional plans (response within 4 hours); Dedicated account managers for Enterprise customers; Comprehensive documentation and API references; Community forum for discussions and tips. We also offer integration assistance and custom onboarding for large accounts.

Yes! BillionVerify offers custom enterprise solutions for high-volume users (1M+ verifications/month). Enterprise features include: custom rate limits, dedicated infrastructure, SLA guarantees, priority support, volume pricing, API white-labeling options, custom integration assistance, and detailed analytics dashboards. Contact our sales team at enterprise@billionverify.com to discuss your specific needs.