Email Finder & Verifier

Find anyone's work email from their name and company domain. Verify deliverability with SMTP checking before you send.

What's Included — Full Source Code:

• Node.js email discovery engine
• SMTP verification module (no emails sent)
• Company domain crawler
• Bulk processing pipeline
• API server with rate limiting

Core Features:

• Pattern matching — generate email candidates from name + domain (john@, j.smith@, john.smith@, etc.)
• SMTP verification — check mailbox existence without sending emails
• Catch-all detection — identify domains that accept all addresses
• Website crawling — find emails published on company websites, team pages, press releases
• LinkedIn correlation — match LinkedIn profiles to discovered emails
• Bulk processing — upload CSV with name + company, get back verified emails
• Confidence scoring — rate each email's likelihood of being correct

Verification Levels:

• Syntax check — valid email format
• Domain check — MX records exist
• SMTP check — mailbox accepts mail
• Catch-all check — domain accepts all addresses
• Deliverability score — 0-100 confidence

API Endpoints:

• POST /find — find email from name + domain
• POST /verify — verify a known email
• POST /bulk-find — batch discovery from CSV
• POST /bulk-verify — batch verification
• GET /domain-pattern — detect a company's email pattern

Process 10,000+ emails per hour. Self-hosted — no per-lookup costs.