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mcp/harbor
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Domain Mail Check MCP

v1.0.0 changelog · 2

app.openkrill/mailcheck

Check how a domain is set up for email and who it is registered with, from public DNS data.

transport:streamable-http tools:8
Website

Target client

run in your project directory 

claude mcp add --transport http mailcheck https://mailcheck.openkrill.app/mcp

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

launch_score

launch score

delivery_check

delivery check

check_email_auth Read-only

check email auth

check_dns_records Read-only

check dns records

lookup_domain_registration Read-only

lookup domain registration

submit_feedback

submit feedback

get_feedback_reply Read-only

get feedback reply

index_tools

index tools

All 8 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.