Domain Mail Check for Claude.ai

app.openkrill/mailcheck

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

client:Claude.ai transport:streamable-http tools:8

Install Domain Mail Check in Claude.ai

Settings → Connectors → Add custom connector

https://mailcheck.openkrill.app/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

launch_score
delivery_check
check_email_auth
check_dns_records
lookup_domain_registration
submit_feedback
get_feedback_reply
index_tools

Domain Mail Check in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Domain Mail Check MCP server