BillionVerify

What is BillionVerify?

BillionVerify is an email verification platform that helps teams clean lists, stop bad signups, and protect deliverability. It checks email syntax, domains, MX records, SMTP response, reputation, disposable addresses, catch-all domains, role-based accounts, and spam trap risk. You can verify a single address, upload a bulk list, clean CSV files, or call the API during signup and enrichment workflows. It also offers a whitelabel portal, so agencies and businesses can run verification under their own brand. The product is built for sales, marketing, agencies, and SaaS teams that need cleaner data before sending campaigns or onboarding users. It connects with popular tools like HubSpot, Salesforce, Mailchimp, SendGrid, Zapier, and more. The site also highlights AI agent and MCP server support for autonomous workflows.

Key features

• Checks syntax, MX, SMTP, reputation, and risk signals.
• Cleans bulk email lists with export-ready status breakdowns.
• Verifies emails in real time through an API.
• Supports CSV uploads with live batch processing progress.
• Offers whitelabel verification portals with custom branding controls.
• Integrates with CRMs, automation tools, and outbound platforms.