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mcp/harbor
Verified official

Couryo free email tools MCP

v1.0.0 changelog · 1

com.couryo/tools

Free, no login: verify an email address, check SPF/DKIM/DMARC, explain SMTP errors, build SPF/DMARC.

transport:streamable-http tools:6
Website

Target client

run in your project directory 

claude mcp add --transport http tools https://mcp.couryo.com/tools

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

verify_email

verify email

verify_emails

verify emails

check_domain_dns Read-only

check domain dns

explain_smtp_error

explain smtp error

generate_spf

generate spf

generate_dmarc

generate dmarc

All 6 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.