send_facility_message — mailbox MCP Tool Mutating
send_facility_message
(send facility message) is one of 45 tools on the
mailbox
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call send_facility_message from your client
- Claude Code mailbox send_facility_message run in your project directory
- Claude Desktop mailbox send_facility_message ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor mailbox send_facility_message ~/.cursor/mcp.json
- VS Code mailbox send_facility_message .vscode/mcp.json
- Zed mailbox send_facility_message ~/.config/zed/settings.json
- Windsurf mailbox send_facility_message ~/.codeium/windsurf/mcp_config.json
- Cline mailbox send_facility_message ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI mailbox send_facility_message ~/.gemini/settings.json
- Grok mailbox send_facility_message .mcp.json (in your project root)
- ChatGPT mailbox send_facility_message Settings → Connectors → Advanced → Developer mode
- Claude.ai mailbox send_facility_message Settings → Connectors → Add custom connector
- LangChain mailbox send_facility_message pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http mailbox https://mailbox.bot/api/mcpOther tools on this server
- 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
- 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
- get_agent_inbox_activity
- report_agent_inbox_outcome
- get_agent_inbox_handling
- propose_agent_inbox_handling
- seed_agent_inbox_sandbox
- list_webhook_endpoints
- create_webhook_endpoint
- update_webhook_endpoint
- test_webhook_endpoint
- test_webhook_endpoint_with_sample
- rotate_webhook_endpoint_secret
- list_webhook_deliveries
- replay_webhook_delivery
- list_inbound_items
- get_inbound_item_sources
- search_inbound_items
- get_inbound_item
- get_inbound_pages
- quote_inbound_forward
- request_inbound_action
- get_inbound_activity
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.