Send & Receive Emails with Claude Code

Claude Code is Anthropic’s terminal coding agent. Add the hosted AgentMail MCP server with one command and it gets an email inbox of its own to send, receive, and reply from.

What you will need

• Claude Code.
• An AgentMail API key, if you connect with a key. Generate one here.

Add the MCP server

Register the server with an API key sent as a header:

claude mcp add --transport http agentmail https://mcp.agentmail.to/mcp \
  --header "x-api-key: $AGENTMAIL_API_KEY"

To sign in with OAuth instead, drop the header. Claude Code opens the AgentMail sign-in on first use:

claude mcp add --transport http agentmail https://mcp.agentmail.to/mcp

Confirm it registered with claude mcp list. Then ask Claude Code to use it:

Create an AgentMail inbox and send a hi email from it to you@example.com.

Next Steps