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Claude.ai

Human Mailbox for Claude.ai

com.humanmailbox/mailbox

A physical postal address in Germany for AI agents. A human opens, scans and forwards your mail.

client:Claude.ai transport:streamable-http tools:32

Install Human Mailbox in Claude.ai

Settings → Connectors → Add custom connector

https://humanmailbox.com/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

All 32 tools →

Human Mailbox in other clients