Free B2B email finder & verification MCP server. Find, verify, and enrich business emails without paid API subscriptions. Self-contained DNS/SMTP verification. Hunter.io alternative for AI agents.

📫 Asynchronous email deliverability verifier that performs MX lookups, SMTP RCPT probes, and catch-all detection with retries, resume support, and CSV/JSON reporting.

Find and verify business emails with an open-source MCP server using DNS, SMTP checks, and web scraping without paid API subscriptions.

📧 Validate large email lists efficiently with an async tool that checks deliverability while respecting rate limits and providing detailed provider feedback.