mailbox for Claude.ai
bot.mailbox/mailbox
Physical mail API for AI agents. Send letters, certified mail. Sandbox + live keys via MCP.
client:Claude.ai
transport:streamable-http
tools:45
Install mailbox in Claude.ai
Settings → Connectors → Add custom connector
https://mailbox.bot/api/mcpClaude 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
- get_mailbox
- get_usage
- list_inbound_forwarding_addresses
- list_inbound_mail
- get_inbound_mail
- list_postal_threads
- get_postal_thread
- get_mailbox_md
- propose_mailbox_md_edit
- send_facility_message
- list_facility_conversations
- get_facility_messages
- update_webhook
- send_outbound_mail
- list_outbound_mail
- get_outbound_mail
- cancel_outbound_mail
- create_test_outbound_mail
- advance_test_outbound_mail
- list_agent_inbox
- get_agent_inbox_context
- get_agent_inbox_sources
- list_agent_inbox_scans
- get_agent_inbox_scan