BillionVerify is a professional email verification service built to solve one problem: bad email data costs businesses money. Every bounced email hurts sender reputation, wastes marketing spend, and skews campaign analytics. We built BillionVerify to give teams of every size access to accurate, fast, and affordable email verification. The platform verifies email addresses through multi-layer checks: syntax validation, domain verification, MX record checks, SMTP mailbox verification, and AI-powered detection for disposable emails, role-based addresses, spam traps, and catch-all domains — delivering 99.9% accuracy. Key capabilities: - Real-time API verification under 300ms - Bulk list cleaning at 50,000 emails/hour via CSV/Excel - Disposable and role-based email detection - Spam trap and catch-all domain detection - 25+ native integrations (Mailchimp, HubSpot, Salesforce, Zapier, and more) - REST API with webhooks for custom integrations BillionVerify serves email marketers, SaaS companies, sales teams, e-commerce platforms, and marketing agencies. Pricing is credit-based with subscriptions starting at $0.8/month and one-time packages from $1 for 1,000 credits. Every account gets 100 free credits on signup — no credit card required. Credits never expire. Data is processed through TLS encryption and not stored after verification. The platform maintains 99.9% uptime across distributed infrastructure.