MCP tool

emailcheck

Checks an email address's syntax and its domain's MX/A records (deliverability signal, no mail is sent).

The emailcheck tool is provided by Mat Web & Data Toolkit (x402, Cloudflare). Install that server in your AI client and the assistant can call it directly.

Servers exposing emailcheck

Tool lists are read from the live servers (or, for packaged servers, from their documentation) each morning, so this reflects what they exposed at the last refresh. Search all tools.