ARC-Relay for Claude Code

com.arc-relay/mcp

DMARC-safe email forwarding for agents: aliases, DNS health checks, and MCP tools on your domains.

client:Claude Code transport:streamable-http

Install ARC-Relay in Claude Code

run in your project directory

claude mcp add --transport http mcp https://arc-relay.com/mcp

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